C07D 237/26 condensed with carbocyclic rings or ring systems
Introduced: July 1974
Last revised: January 2006
Full Title
Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings > condensed with carbocyclic rings or ring systems
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC CHEMISTRY
- Subclass:
- HETEROCYCLIC COMPOUNDS
Filing statistics
IPC C07D 237/26 belongs to the parent subclass C07D, which recorded 508,449 patent applications worldwide between 2013 and 2023. Annual filings declined from 45,711 in 2013 to 37,848 in 2023 (-17%), peaking at 49,633 applications in 2019. The most active applicants in class C07 are CHINESE ACADEMY OF SCIENCES (12,697 applications), ROCHE (11,347 applications) and SINOPEC (CHINA PETROCHEMICAL CORPORATION) (11,024 applications).
Source: EPO PATSTAT, worldwide filings
3 direct subcodes
Child Classifications
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- C07D 237/28 Cinnolines
- C07D 237/3 Phthalazines
- C07D 237/36 Benzo-cinnolines
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