IPC Subgroup
C07D 307/77 ortho- or peri-condensed with carbocyclic rings or ring systems
Introduced: July 1974
Last revised: January 2006
Full Title
Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom > ortho- or peri-condensed with carbocyclic rings or ring systems
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC CHEMISTRY
- Subclass:
- HETEROCYCLIC COMPOUNDS
5 direct subcodes
Child Classifications
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- C07D 307/78 Benzo [b] furans; Hydrogenated benzo [b] furans
- C07D 307/87 Benzo [c] furans; Hydrogenated benzo [c] furans
- C07D 307/91 Dibenzofurans; Hydrogenated dibenzofurans
- C07D 307/92 Naphthofurans; Hydrogenated naphthofurans
- C07D 307/93 condensed with a ring other than six-membered
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