CPC Subgroup
C07D 307/77 ortho- or peri-condensed with carbocyclic rings or ring systems
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
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
- 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