CPC Main Group
C07C 231/00 Preparation of carboxylic acid amides
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 231/10 from compounds not provided for in groups C07C231/02 - C07C231/08
- 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 (separation of optical isomers C07C231/20)
Top Applicants
Top 10 applicants by patent filingsfor 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