DIFF Main Group
C07C 37/00 Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
Introduced: September 1968
Of 14 combined children, 11 exist in both systems.
3 codes are CPC-only extensions.
7 shared codes have differing titles between IPC and CPC.
Child Classifications
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- C07C 37/01 by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis since 1980 IPC+CPC Available in IPC and CPC
- C07C 37/06 by conversion of non-aromatic six-membered rings or of such rings formed in situ into aromatic six-membered rings, e.g. by dehydrogenation IPC+CPC Available in IPC and CPC
- C07C 37/08 by decomposition of hydroperoxides, e.g. cumene hydroperoxide IPC+CPC Available in IPC and CPC
- C07C 37/11 by reactions increasing the number of carbon atoms since 1980 +1 CPC IPC+CPC Available in IPC and CPC
- C07C 37/48 by exchange of hydrocarbon groups, which may be substituted, from the same of other compounds, e.g. transalkylation since 1980 IPC+CPC Available in IPC and CPC
- C07C 37/50 by reactions decreasing the number of carbon atoms (C07C37/04, C07C37/045, C07C37/055, C07C37/08 take precedence) since 1980 IPC+CPC Available in IPC and CPC
- C07C 37/58 by oxidation reactions introducing directly hydroxy groups on a =CH-group belonging to a six-membered aromatic ring with the aid of molecular oxygen since 1980 IPC+CPC Available in IPC and CPC
- C07C 37/60 by oxidation reactions introducing directly hydroxy groups on a =CH-group belonging to a six-membered aromatic ring with the aid of other oxidants than molecular oxygen or their mixtures with molecular oxygen since 1980 IPC+CPC Available in IPC and CPC
- C07C 37/62 by introduction of halogen; by substitution of halogen atoms by other halogen atoms since 1980 IPC+CPC Available in IPC and CPC
- C07C 37/64 Preparation of O-metal compounds with O-metal group bound to a carbon atom belonging to a six-membered aromatic ring since 1980 IPC+CPC Available in IPC and CPC
- C07C 37/68 Purification; separation; Use of additives, e.g. for stabilisation since 1980 +1 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
Class C07,2013–2023, worldwide · Source: EPO PATSTAT
- ROCHE CH 12,683
- NOVARTIS CH 10,775
- CHINESE ACADEMY OF SCIENCES 10,619
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,511
- REGENERON PHARMACEUTICALS US 8,426
- BRISTOL-MYERS SQUIBB COMPANY US 7,979
- LG CHEM KR 7,978
- HARVARD UNIVERSITY US 7,706
- UNIVERSITY OF CALIFORNIA US 7,455
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,219