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PCE
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CPC Subgroup
C07D 301/18

from polybasic carboxylic acids

Full Title

Preparation of oxiranes > Synthesis of the oxirane ring > by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds > with organic peracids, or salts, anhydrides or esters thereof > formed in situ, e.g. from carboxylic acids and hydrogen peroxide > from polybasic carboxylic acids

Top Applicants

Top 10 applicants by patent filingsfor class C07, 2013–2023, worldwide · Source: EPO PATSTAT

  1. ROCHE CH 12,683
  2. NOVARTIS CH 10,775
  3. CHINESE ACADEMY OF SCIENCES 10,619
  4. BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,511
  5. REGENERON PHARMACEUTICALS US 8,426
  6. BRISTOL-MYERS SQUIBB COMPANY US 7,979
  7. LG CHEM KR 7,978
  8. HARVARD UNIVERSITY US 7,706
  9. UNIVERSITY OF CALIFORNIA US 7,455
  10. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,219