CPC Subgroup
C07C 21/04 Chloro-alkenes
Full Title
Acyclic unsaturated compounds containing halogen atoms > containing carbon-to-carbon double bonds > Chloro-alkenes
Filing statistics
CPC C07C 21/04 belongs to the parent subclass C07C, which recorded 309,912 patent applications worldwide between 2013 and 2023. Annual filings grew from 24,406 in 2013 to 24,505 in 2023 (+0%), peaking at 31,531 applications in 2016. The most active applicants in class C07 are ROCHE (12,683 applications), NOVARTIS (10,775 applications) and CHINESE ACADEMY OF SCIENCES (10,619 applications).
Source: EPO PATSTAT, worldwide filings
5 direct subcodes
Child Classifications
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- C07C 21/06 Vinyl chloride
- C07C 21/067 Allyl chloride; Methallyl chloride
- C07C 21/073 Dichloro-alkenes
- C07C 21/10 Trichloroethene
- C07C 21/12 Tetrachloroethene
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