CPC Subgroup
C07D 303/02 Compounds containing oxirane rings
Full Title
Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom > Compounds containing oxirane rings
7 direct subcodes
Child Classifications
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- C07D 303/04 containing only hydrogen and carbon atoms in addition to the ring oxygen atoms
- C07D 303/08 with hydrocarbon radicals, substituted by halogen atoms, nitro radicals or nitroso radicals
- C07D 303/12 with hydrocarbon radicals, substituted by singly or doubly bound oxygen atoms
- C07D 303/34 with hydrocarbon radicals, substituted by sulphur, selenium or tellurium atoms
- C07D 303/36 with hydrocarbon radicals, substituted by nitrogen atoms (nitro, nitroso radicals C07D303/08)
- C07D 303/38 with hydrocarbon radicals, substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D 303/48 with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms, e.g. ester or nitrile radicals
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