IPC Main Group
C07C 253/00 Preparation of carboxylic acid nitriles
Introduced: January 1990
Last revised: January 2006
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC CHEMISTRY
- Subclass:
- ACYCLIC OR CARBOCYCLIC COMPOUNDS
12 direct subcodes
Child Classifications
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- C07C 253/02 by reaction of nitrogen oxide with organic compounds
- C07C 253/04 by reaction of cyanogen halides, e.g. ClCN, with organic compounds
- C07C 253/06 from N-formylated amino compounds
- C07C 253/08 by addition of hydrogen cyanide or salts thereof to unsaturated compounds
- C07C 253/14 by reaction of cyanides with halogen-containing compounds with replacement of halogen atoms by cyano groups
- C07C 253/16 by reaction of cyanides with lactones or compounds containing hydroxy groups or etherified or esterified hydroxy groups
- C07C 253/18 by reaction of ammonia or amines with compounds containing carbon-to-carbon multiple bonds other than in six-membered aromatic rings
- C07C 253/2 by dehydratation of carboxylic acid amides
- C07C 253/22 by reaction of ammonia with carboxylic acids with replacement of carboxyl groups by cyano groups
- C07C 253/24 by ammoxidation of hydrocarbons or substituted hydrocarbons
- C07C 253/3 by reactions not involving the formation of cyano groups
- C07C 253/32 Separation; Purification; Stabilisation; Use of additives
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