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PCE
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CPC Subgroup
C07C 37/52

by splitting polyaromatic compounds, e.g. polyphenolalkanes

Full Title

Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring > by reactions decreasing the number of carbon atoms (C07C37/04, C07C37/045, C07C37/055, C07C37/08 take precedence) > by splitting polyaromatic compounds, e.g. polyphenolalkanes

1 direct subcode

Child Classifications

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  • C07C 37/54 by hydrolysis of lignin or sulfite waste liquor

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