IPC Main Group
C07C 281/00 Derivatives of carbonic acid containing functional groups covered by groups in which at least one nitrogen atom of these functional groups is further bound to another nitrogen atom not being part of a nitro or nitroso group
Introduced: January 1990
Last revised: January 2006
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC CHEMISTRY
- Subclass:
- ACYCLIC OR CARBOCYCLIC COMPOUNDS
Related Keywords
hydrazides of CARBONIC acidorganic derivatives of HYDRAZINE
4 direct subcodes
Child Classifications
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- C07C 281/02 Compounds containing any of the groups e.g. carbazates
- C07C 281/06 Compounds containing any of the groups e.g. semicarbazides
- C07C 281/16 Compounds containing any of the groups e.g. aminoguanidine
- C07C 281/2 the two nitrogen atoms of the functional groups being doubly-bound to each other, e.g. azoformamide
Top Applicants
Top 10 applicants by patent filingsfor class C07, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 12,697
- ROCHE CH 11,347
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 11,024
- NOVARTIS CH 9,356
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 8,531
- BRISTOL-MYERS SQUIBB COMPANY US 7,320
- LG CHEM KR 7,245
- REGENERON PHARMACEUTICALS US 6,816
- HARVARD UNIVERSITY US 6,190
- GENENTECH US 5,922