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IPC Subgroup
C07D 303/16

by esterified hydroxyl radicals

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 > with hydrocarbon radicals, substituted by singly or doubly bound oxygen atoms > by esterified hydroxyl radicals

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
ORGANIC CHEMISTRY
Subclass:
HETEROCYCLIC COMPOUNDS

1 direct subcode

Child Classifications

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  • C07D 303/17 containing oxirane rings condensed with carbocyclic ring systems having three or more relevant rings

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