CPC Subgroup
C07C 13/54 with three condensed rings
Full Title
Cyclic hydrocarbons containing rings other than, or in addition to, six-membered aromatic rings > Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof > with condensed rings > with three condensed rings
3 direct subcodes
Child Classifications
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- C07C 13/547 at least one ring not being six-membered, the other rings being at the most six-membered
- C07C 13/573 with three six-membered rings
- C07C 13/605 with a bridged ring system
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