Abstract

An electronic waste (E-waste) recycling process and composite article or material using the E-waste. E-waste, for example including printed circuit boards (PCBs) and/or electronic components (ECs) such as integrated circuit chips, is size reduced, processed with one or more chemicals to remove base metals, precious metals, and chemicals of concern, and dried to provide a E-waste powder. The E-waste powder, may be used to form an E-waste composite article or material.

IPC Classes  ?

• C22B 11/00 - Obtaining noble metals
• B29B 17/02 - Separating plastics from other materials
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof

Abstract

A method of refining a precious metal, involving contacting the precious metal with a refining solution under conditions to solubilize the precious metal, the refining solution having an acid, an oxidant, an optional ligand source, and a water-miscible solvent; and forming a leached solution comprising leached precious metal.

IPC Classes  ?

• C22B 3/10 - Hydrochloric acid
• C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
• C22B 11/00 - Obtaining noble metals

Abstract

Methods for leaching and extraction of precious metals. For example, methods of leaching palladium, rhodium, platinum from a substance comprising palladium, rhodium, and/or platinum (such as a platinum group metal (PGM) concentrate, and a catalytic converter) using an organic solvent that is water-miscible

IPC Classes  ?

• C22B 11/00 - Obtaining noble metals
• C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof

Abstract

Solutions and methods for leaching coinage metals. For example, Solutions and methods for leaching copper and/or silver from a substance comprising copper and/or silver (such as a coinage metal-concentrate, or electronic waste) using a water-miscible stabilizer in combination with leaching reagents to form leach solutions.

IPC Classes  ?

• C22B 3/08 - Sulfuric acid
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 15/00 - Obtaining copper
• C22B 11/00 - Obtaining noble metals
• C25C 1/12 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
• C25C 1/20 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals

Abstract

The present application relates to methods for leaching and extraction of precious metals. For example, the present application relates to methods of leaching gold, palladium and/or platinum from a substance comprising gold, palladium and/or platinum (such as a gold-containing ore or a platinum group metal (PGM) concentrate) using an organic solvent that is water-miscible or partially water-miscible.

IPC Classes  ?

• C22B 11/00 - Obtaining noble metals
• C22B 3/16 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions
• C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
• C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
• C22B 3/28 - Amines
• C22B 3/34 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing sulfur
• C22B 3/36 - Heterocyclic compounds
• C22B 3/40 - Mixtures
• C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
• C07C 335/26 - Y being a hydrogen or a carbon atom, e.g. benzoylthioureas
• C07D 207/06 - Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with radicals, containing only hydrogen and carbon atoms, attached to ring carbon atoms
• C07D 211/16 - Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with radicals containing only carbon and hydrogen atoms attached to ring carbon atoms with acylated ring nitrogen atom
• C07D 295/215 - Radicals derived from nitrogen analogues of carbonic acid
• C22B 1/00 - Preliminary treatment of ores or scrap
• C25C 1/20 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals
• C25C 7/06 - Operating or servicing

Abstract

The present application relates to methods for the simultaneous leaching and extraction of precious metals. For example, the present application relates to methods of leaching and extracting gold and/or palladium from a substance comprising gold and/or palladium such as a gold and/or palladium-containing ore in one step using a compound of Formula I: (I).

IPC Classes  ?

• C22B 11/00 - Obtaining noble metals
• C22B 3/16 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions
• C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
• C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
• C22B 3/28 - Amines
• C22B 3/34 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing sulfur
• C22B 3/36 - Heterocyclic compounds
• C22B 3/40 - Mixtures
• C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
• C07C 335/26 - Y being a hydrogen or a carbon atom, e.g. benzoylthioureas
• C07D 207/06 - Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with radicals, containing only hydrogen and carbon atoms, attached to ring carbon atoms
• C07D 211/16 - Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with radicals containing only carbon and hydrogen atoms attached to ring carbon atoms with acylated ring nitrogen atom
• C07D 295/215 - Radicals derived from nitrogen analogues of carbonic acid
• C22B 1/00 - Preliminary treatment of ores or scrap
• C25C 1/20 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals
• C25C 7/06 - Operating or servicing

Abstract

Solutions and methods for leaching coinage metals. For example, Solutions and methods for leaching copper and/or silver from a substance comprising copper and/or silver (such as a coinage metal-concentrate, or electronic waste) using a water-miscible stabilizer in combination with leaching reagents to form leach solutions.

IPC Classes  ?

• C22B 3/08 - Sulfuric acid
• B01D 11/02 - Solvent extraction of solids
• C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
• C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C25C 1/12 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
• C25C 1/20 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals
• C22B 11/10 - Obtaining noble metals by amalgamating
• C22B 15/00 - Obtaining copper

Abstract

An electronic waste (E-waste) recycling process and composite article or material using the E-waste. E-waste, for example including printed circuit boards (PCBs) and/or electronic components (ECs) such as integrated circuit chips, is size reduced, processed with one or more chemicals to remove base metals, precious metals, and chemicals of concern, and dried to provide a E-waste powder. The E-waste powder, may be used to form an E-waste composite article or material.

IPC Classes  ?

• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• B01D 11/02 - Solvent extraction of solids
• B01J 38/00 - Regeneration or reactivation of catalysts, in general
• B29B 17/00 - Recovery of plastics or other constituents of waste material containing plastics
• C08K 11/00 - Use of ingredients of unknown constitution, e.g. undefined reaction products
• C08K 9/00 - Use of pretreated ingredients
• C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching

Abstract

Methods for leaching and extraction of precious metals. For example, methods of leaching palladium, rhodium, platinum from a substance comprising palladium, rhodium, and/or platinum (such as a platinum group metal (PGM) concentrate, and a catalytic converter) using an organic solvent that is water-miscible

IPC Classes  ?

• C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
• B01D 11/02 - Solvent extraction of solids
• B01J 38/48 - Liquid treating or treating in liquid phase, e.g. dissolved or suspended
• C01G 55/00 - Compounds of ruthenium, rhodium, palladium, osmium, iridium, or platinum
• C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
• C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
• C22B 5/00 - General processes of reducing to metals
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 11/00 - Obtaining noble metals

Goods & Services

Refining of metals from ore, minerals, and earth born natural resources; plating precious metals on components; material processing, namely, developing and using chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals Chemicals for use in industry and science, namely, chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals Extracting machines for chemical processing, namely, leaching reactors for leaching precious metal concentrates Laboratory chemical reactors, namely, leaching reactors for leaching precious metal concentrates Precious metals Mining extraction of metals from ore, minerals, and earth born natural resources Chemical engineering for refining, purifying, upgrading and extracting precious and non-precious metals; Chemical research for refining, purifying, upgrading and extracting precious and non-precious metals; Testing of chemicals for refining, purifying, upgrading and extracting precious and non-precious metals; Chemical research and analysis for refining, purifying, upgrading and extracting precious and non-precious metals

Goods & Services

Recycling of electronic waste; material processing, namely, upgrading, purifying and refining impure precious metals and non-precious metals; material processing, namely, precious metal production through obtaining metals from native earth materials; Refining of metals from ore, minerals, and earth born natural resources; material processing, namely, precious and non-precious metal recovery and extraction from used, spent, unwanted and waste material from electronic waste, jewelry, recycled combustion engines and catalytic converters; plating precious metals on components; material processing, namely, developing and using chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals Chemicals for use in industry and science, namely, chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals Common metals, namely, common metals unwrought and semi-worked for further manufacture, common metals in powder form semi-wrought, alloys of common metal Extracting machines for chemical processing, namely, leaching reactors for leaching precious metal concentrates Laboratory chemical reactors, namely, leaching reactors for leaching precious metal concentrates Precious metals Mining extraction of metals from ore, minerals, and earth born natural resources Chemical engineering for refining, purifying, upgrading and extracting precious and non-precious metals; Chemical research for refining, purifying, upgrading and extracting precious and non-precious metals; Testing of chemicals for refining, purifying, upgrading and extracting precious and non-precious metals; Chemical research and analysis for refining, purifying, upgrading and extracting precious and non-precious metals

Goods & Services

Recycling of electronic waste; material processing, namely, upgrading, purifying and refining impure precious metals and non-precious metals; material processing, namely, precious metal production through obtaining metals from native earth materials; Refining of metals from ore, minerals, and earth born natural resources; material processing, namely, precious and non-precious metal recovery and extraction from used, spent, unwanted and waste material from electronic waste, jewelry, recycled combustion engines and catalytic converters; plating precious metals on components; material processing, namely, developing and using chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals Chemicals for use in industry and science, namely, chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals Common metals, namely, common metals unwrought and semi-worked for further manufacture, common metals in powder form semi-wrought, alloys of common metal Extracting machines for chemical processing, namely, leaching reactors for leaching precious metal concentrates Laboratory chemical reactors, namely, leaching reactors for leaching precious metal concentrates Precious metals Mining extraction of metals from ore, minerals, and earth born natural resources Chemical engineering for refining, purifying, upgrading and extracting precious and non-precious metals; Chemical research for refining, purifying, upgrading and extracting precious and non-precious metals; Testing of chemicals for refining, purifying, upgrading and extracting precious and non-precious metals; Chemical research and analysis for refining, purifying, upgrading and extracting precious and non-precious metals

Goods & Services

Chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals. Common metals. Leaching reactors. Precious metals. Extracting and mining metals from ore, minerals and earth born natural resources. Recycling of electronic waste; upgrading, purifying and refining impure precious metals and non-precious metals; precious metal production; refining metals from ore, minerals and earth born natural resources; precious and non-precious metal recovery and extraction from used, spent, unwanted and waste materials namely from electronic waste, jewelry, recycled combustion engines and catalytic converters; plating precious metals on components; chemical and metallurgical processing, namely, using chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals.

Goods & Services

Chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals. Common metals. Leaching reactors. Precious metals. Extracting and mining metals from ore, minerals and earth born natural resources. Recycling of electronic waste; upgrading, purifying and refining impure precious metals and non-precious metals; precious metal production; refining metals from ore, minerals and earth born natural resources; precious and non-precious metal recovery and extraction from used, spent, unwanted and waste materials namely from electronic waste, jewelry, recycled combustion engines and catalytic converters; plating precious metals on components; chemical and metallurgical processing, namely, using chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals.

Goods & Services

Chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals. Common metals. Leaching reactors. Precious metals. Extracting and mining metals from ore, minerals and earth born natural resources. Recycling of electronic waste; upgrading, purifying and refining impure precious metals and non-precious metals; precious metal production; refining metals from ore, minerals and earth born natural resources; precious and non-precious metal recovery and extraction from used, spent, unwanted and waste materials namely from electronic waste, jewelry, recycled combustion engines and catalytic converters; plating precious metals on components; chemical and metallurgical processing, namely, using chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals.

Goods & Services

(1) Chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals (2) Common metals (3) Jacketed glass reactors for the liberation of metals from ores by chemical dissolution (4) Precious metals (1) Recycling of electronic waste; upgrading, purifying and refining impure precious metals and non-precious metals; precious metal extraction; refining metals from ore, minerals and earth born natural resources; precious and non-precious metal recovery and extraction from used, spent, unwanted and waste materials namely from electronic waste, jewelry, recycled combustion engines and catalytic converters; plating precious metals on components; developing and using chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals (2) Extracting and mining metals from ore, minerals and earth born natural resources

Goods & Services

(1) Chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals (2) Common metals (3) Leaching reactors (4) Precious metals (1) Recycling of electronic waste; upgrading, purifying and refining impure precious metals and non-precious metals; precious metal production; refining, extracting and mining metals from ore, minerals and earth born natural resources; precious and non-precious metal recovery and extraction from used, spent, unwanted and waste materials namely from electronic waste, jewelry, recycled combustion engines and catalytic converters; plating precious metals on components; developing and using chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals

Goods & Services

(1) Chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals. (2) Common metals (3) Industrial chemical reactors for the liberation of metals from ore, minerals, electronic waste, water, soil, doré bars, gold and silver alloys, asteroids, and geothermal brines by chemical dissolution. (4) Precious metals (1) Recycling of electronic waste; upgrading, purifying and refining impure precious metals and non-precious metals; refining and separation of precious metals; refining metals from ore, minerals and earth born natural resources; precious and non-precious metal recovery and extraction from used, spent, unwanted and waste materials namely from electronic waste, jewelry, recycled combustion engines and catalytic converters; plating precious metals on components; developing and using chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals. (2) Extracting and mining metals from ore, minerals and earth born natural resources; precious metal extraction.

Goods & Services

(1) Chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals (2) Common metals (3) Leaching reactors (4) Precious metals (1) Recycling of electronic waste; upgrading, purifying and refining impure precious metals and non-precious metals; precious metal production; refining, extracting and mining metals from ore, minerals and earth born natural resources; precious and non-precious metal recovery and extraction from used, spent, unwanted and waste materials namely from electronic waste, jewelry, recycled combustion engines and catalytic converters; plating precious metals on components; developing and using chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals

Goods & Services

(1) Chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals (2) Common metals (3) Jacketed glass reactors for the liberation of metals from ores by chemical dissolution (4) Precious metals (1) Recycling of electronic waste; upgrading, purifying and refining impure precious metals and non-precious metals; refining metals from ore, minerals and earth born natural resources; precious and non-precious metal recovery and extraction from used, spent, unwanted and waste materials namely from electronic waste, jewelry, recycled combustion engines and catalytic converters; plating precious metals on components; developing and using chemical solutions for refining, purifying, upgrading and extracting precious and non precious metal (2) Extracting and mining metals from ore, minerals and earth born natural resources; precious metal extraction

Goods & Services

(1) Chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals (2) Common metals (3) Industrial chemical reactors for the liberation of metals from ore, minerals, electronic waste, water, soil, doré bars, gold and silver alloys, asteroids, and geothermal brines by chemical dissolution (4) Precious metals (1) Recycling of electronic waste; upgrading, purifying and refining impure precious metals and non-precious metals; refining and separation of precious metals; refining metals from ore, minerals and earth born natural resources; precious and non-precious metal recovery and extraction from used, spent, unwanted and waste materials namely from electronic waste, jewelry, recycled combustion engines and catalytic converters; plating precious metals on components; developing and using chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals (2) Extracting and mining metals from ore, minerals and earth born natural resources; precious metal extraction

Goods & Services

(1) Chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals (2) Common metals (3) Industrial chemical reactors for the liberation of metals from ore, minerals, electronic waste, water, soil, doré bars, gold and silver alloys, asteroids, and geothermal brines by chemical dissolution (4) Precious metals (1) Recycling of electronic waste; upgrading, purifying and refining impure precious metals and non-precious metals; precious metal extraction, refining and separation of precious metals; refining, extracting and mining metals from ore, minerals and earth born natural resources; precious and non-precious metal recovery and extraction from used, spent, unwanted and waste materials namely from electronic waste, jewelry, recycled combustion engines and catalytic converters; precious metal plating; developing and using chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals

Goods & Services

(1) Chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals (2) Common metals (3) Industrial chemical reactors for the liberation of metals from ore, minerals, electronic waste, water, soil, doré bars, gold and silver alloys, asteroids, and geothermal brines by chemical dissolution (4) Precious metals (1) Recycling of electronic waste; upgrading, purifying and refining impure precious metals and non-precious metals; precious metal extraction, refining and separation of precious metals; refining, extracting and mining metals from ore, minerals and earth born natural resources; precious and non-precious metal recovery and extraction from used, spent, unwanted and waste materials namely from electronic waste, jewelry, recycled combustion engines and catalytic converters; precious metal plating; developing and using chemical solutions for refining, purifying, upgrading and extracting precious and non-precious metals

Goods & Services

(1) Chemical ingredients, namely lixiviant, for use in the extraction of metal from ore, mineral and electronic waste (1) Recycling and reclamation of usable materials from residue of waste produced from old, end-of-life and discarded electrical and electronic equipment (electronic waste), jewelry, combustion engine recycling, catalytic converters; recovery of precious metals from waste; precious metal extraction; refining and separation of precious metals; mining, including deep sea mining, from ore, minerals, water, soil, doré bars, gold and silver alloys, asteroids, and geothermal brines for metal recovery; precious and non-precious metal recovery and extraction

Abstract

The present application relates to methods for the simultaneous leaching and extraction of precious metals. For example, the present application relates to methods of leaching and extracting gold and/or palladium from a substance comprising gold and/or palladium such as a gold- and/or palladium-containing ore in one step using a compound of Formula I:(I).

IPC Classes  ?

• C22B 11/00 - Obtaining noble metals
• C22B 3/16 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions
• C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
• C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
• C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
• C07C 335/26 - Y being a hydrogen or a carbon atom, e.g. benzoylthioureas
• C07D 207/06 - Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with radicals, containing only hydrogen and carbon atoms, attached to ring carbon atoms
• C07D 211/16 - Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with radicals containing only carbon and hydrogen atoms attached to ring carbon atoms with acylated ring nitrogen atom
• C07D 295/215 - Radicals derived from nitrogen analogues of carbonic acid
• C22B 1/00 - Preliminary treatment of ores or scrap
• C25C 1/20 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals
• C25C 7/06 - Operating or servicing

Abstract

The present application relates to methods for leaching and extraction of precious metals. For example, the present application relates to methods of leaching gold, palladium and/or platinum from a substance comprising gold, palladium and/or platinum (such as a gold-containing ore or a platinum group metal (PGM) concentrate) using an organic solvent that is water-miscible or partially water-miscible.

IPC Classes  ?

• C22B 11/00 - Obtaining noble metals
• C22B 3/16 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions
• C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
• C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
• C22B 3/28 - Amines
• C22B 3/34 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing sulfur
• C22B 3/36 - Heterocyclic compounds
• C22B 3/40 - Mixtures
• C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
• C07C 335/26 - Y being a hydrogen or a carbon atom, e.g. benzoylthioureas
• C07D 207/06 - Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with radicals, containing only hydrogen and carbon atoms, attached to ring carbon atoms
• C07D 211/16 - Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with radicals containing only carbon and hydrogen atoms attached to ring carbon atoms with acylated ring nitrogen atom
• C07D 295/215 - Radicals derived from nitrogen analogues of carbonic acid
• C22B 1/00 - Preliminary treatment of ores or scrap
• C25C 1/20 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals
• C25C 7/06 - Operating or servicing