IPC Subgroup
C07D 303/02 Compounds containing oxirane rings
Introduced: July 1974
Last revised: January 2006
Full Title
Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom > Compounds containing oxirane rings
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC CHEMISTRY
- Subclass:
- HETEROCYCLIC COMPOUNDS
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 sulfur, selenium, or tellurium atoms
- C07D 303/36 with hydrocarbon radicals, substituted by nitrogen atoms
- 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
- 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