- All sections
- C - Chemistrymetallurgy
- C21D - Modifying the physical structure of ferrous metalsgeneral devices for heat treatment of ferrous or non-ferrous metals or alloysmaking metal malleable, e.g. by decarburisation or tempering
- C21D 1/767 - Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulationReheating thereof
Patent holdings for IPC class C21D 1/767
Total number of patents in this class: 57
10-year publication summary
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4
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3
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5
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8
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3
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1
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6
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3
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2
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2
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ECM Technologies | 29 |
7 |
| Robert Bosch GmbH | 42596 |
6 |
| Ebner Industrieofenbau GmbH | 142 |
3 |
| Fives Stein | 105 |
3 |
| Ipsen, Inc. | 27 |
3 |
| ThyssenKrupp Steel Europe AG | 952 |
3 |
| Beijing GoldWind Science & Creation Windpower Equipment Co., Ltd. | 366 |
2 |
| Gautschi Engineering GmbH | 12 |
2 |
| Ipsen International GmbH | 38 |
2 |
| SECO / Warwick S.A. | 34 |
2 |
| Corning Incorporated | 10252 |
1 |
| Andritz Technology and Asset Management GmbH | 90 |
1 |
| ArcelorMittal | 2254 |
1 |
| ArcelorMittal France | 86 |
1 |
| Chugai Ro Co., Ltd. | 128 |
1 |
| IHI Corporation | 3415 |
1 |
| IHI Machinery and Furnace Co., Ltd. | 78 |
1 |
| JFE Steel Corporation | 6806 |
1 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3949 |
1 |
| Linde Aktiengesellschaft | 1517 |
1 |
| Other owners | 14 |