CPC Subgroup
C07D 201/02 Preparation of lactams
Full Title
Preparation, separation, purification or stabilisation of unsubstituted lactams > Preparation of lactams
4 direct subcodes
Child Classifications
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- C07D 201/04 from or via oximes by Beckmann rearrangement
- C07D 201/08 from carboxylic acids or derivatives thereof, e.g. hydroxy carboxylic acids, lactones or nitriles
- C07D 201/10 from cycloaliphatic compounds by simultaneous nitrosylation and rearrangement
- C07D 201/12 by depolymerising polyamides
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