IPC Main Group
C07C 231/00 Preparation of carboxylic acid amides
Introduced: January 1990
Last revised: January 2006
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC CHEMISTRY
- Subclass:
- ACYCLIC OR CARBOCYCLIC COMPOUNDS
Related Keywords
ESTERS of amino carboxylic acids
9 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- C07C 231/02 from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
- C07C 231/04 from ketenes by reaction with ammonia or amines
- C07C 231/06 from nitriles by transformation of cyano groups into carboxamide groups
- C07C 231/08 from amides by reaction at nitrogen atoms of carboxamide groups
- C07C 231/1 from compounds not provided for in groups
- C07C 231/12 by reactions not involving the formation of carboxamide groups
- C07C 231/14 by formation of carboxamide groups together with reactions not involving the carboxamide groups
- C07C 231/16 Preparation of optical isomers
- C07C 231/22 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