IPC Subgroup
C07D 205/08 with one oxygen atom directly attached in position 2, e.g. beta-lactams
Introduced: July 1974
Last revised: January 2006
Full Title
Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom > not condensed with other rings > having one double bond between ring members or between a ring member and a non-ring member > with one oxygen atom directly attached in position 2, e.g. beta-lactams
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC CHEMISTRY
- Subclass:
- HETEROCYCLIC COMPOUNDS
Related Keywords
beta- LACTAM(S)
2 direct subcodes
Child Classifications
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- C07D 205/085 with a nitrogen atom directly attached in position 3
- C07D 205/09 with a sulfur atom directly attached in position 4
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