• All sections
• C - Chemistrymetallurgy
• C07D - Heterocyclic compounds
• C07D 213/22 - Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom containing only hydrogen and carbon atoms in addition to the ring nitrogen atom containing two or more pyridine rings directly linked together, e.g. bipyridyl

Patent holdings for IPC class C07D 213/22

Total number of patents in this class: 250

10-year publication summary

Principal owners for this class