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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 303/34 with hydrocarbon radicals, substituted by sulfur, selenium, or tellurium atoms
  • C07D 303/36 with hydrocarbon radicals, substituted by nitrogen atoms
  • 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

  1. CHINESE ACADEMY OF SCIENCES 12,697
  2. ROCHE CH 11,347
  3. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 11,024
  4. NOVARTIS CH 9,356
  5. BASF (BADISCHE ANILIN & SODA FABRIK) DE 8,531
  6. BRISTOL-MYERS SQUIBB COMPANY US 7,320
  7. LG CHEM KR 7,245
  8. REGENERON PHARMACEUTICALS US 6,816
  9. HARVARD UNIVERSITY US 6,190
  10. GENENTECH US 5,922