CPC Subgroup
C07D 311/04 Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
Full Title
Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings > ortho- or peri-condensed with carbocyclic rings or ring systems > Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
4 direct subcodes
Child Classifications
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- C07D 311/06 with oxygen or sulfur atoms directly attached in position 2
- C07D 311/22 with oxygen or sulfur atoms directly attached in position 4
- C07D 311/42 with oxygen or sulfur atoms in positions 2 and 4
- C07D 311/58 other than with oxygen or sulphur atoms in position 2 or 4
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