DIFF Main Group
C07C 253/00 Preparation of carboxylic acid nitriles (of cyanogen or compounds thereof C01C3/00)
Introduced: January 1990
Title
Titles differ between systems:
IPC: Preparation of carboxylic acid nitriles
CPC: Preparation of carboxylic acid nitriles (of cyanogen or compounds thereof C01C3/00)
Full Title
Full titles differ between systems:
IPC:
Preparation of carboxylic acid nitriles
CPC:
Preparation of carboxylic acid nitriles (of cyanogen or compounds thereof C01C3/00)
IPC and CPC are identically structured here. All 12 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1990.
Child Classifications
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- C07C 253/02 by reaction of nitrogen oxide with organic compounds since 1990 IPC+CPC Available in IPC and CPC
- C07C 253/04 by reaction of cyanogen halides, e.g. ClCN, with organic compounds since 1990 IPC+CPC Available in IPC and CPC
- C07C 253/08 by addition of hydrogen cyanide or salts thereof to unsaturated compounds since 1990 IPC+CPC Available in IPC and CPC
- C07C 253/14 by reaction of cyanides with halogen-containing compounds with replacement of halogen atoms by cyano groups since 1990 IPC+CPC Available in IPC and CPC
- C07C 253/16 by reaction of cyanides with lactones or compounds containing hydroxy groups or etherified or esterified hydroxy groups since 1990 IPC+CPC Available in IPC and CPC
- C07C 253/18 by reaction of ammonia or amines with compounds containing carbon-to-carbon multiple bonds other than in six-membered aromatic rings since 1990 IPC+CPC Available in IPC and CPC
- C07C 253/22 by reaction of ammonia with carboxylic acids with replacement of carboxyl groups by cyano groups since 1990 IPC+CPC Available in IPC and CPC
- C07C 253/24 by ammoxidation of hydrocarbons or substituted hydrocarbons since 1990 IPC+CPC Available in IPC and CPC
- C07C 253/30 by reactions not involving the formation of cyano groups since 1990 IPC+CPC Available in IPC and CPC
- C07C 253/32 Separation; Purification; Stabilisation; Use of additives since 1990 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