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IPC Main Group
C07C 67/00

Preparation of carboxylic acid esters

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
ORGANIC CHEMISTRY
Subclass:
ACYCLIC OR CARBOCYCLIC COMPOUNDS

Related Keywords

preparation of CARBOXYLIC or salts, halides, anhydrides, derivatives, esters or nitriles thereofpreparation of ESTERS of carboxylic acidssynthetic GLYCERIDES

22 direct subcodes

Child Classifications

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  • C07C 67/02 by interreacting ester groups, i.e. transesterification
  • C07C 67/03 by reacting an ester group with a hydroxy group
  • C07C 67/035 by reacting carboxylic acids or symmetrical anhydrides with saturated hydrocarbons
  • C07C 67/08 by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
  • C07C 67/12 from asymmetrical anhydrides
  • C07C 67/14 from carboxylic acid halides
  • C07C 67/16 from carboxylic acids, esters or anhydrides wherein one oxygen atom has been replaced by a sulfur, selenium or tellurium atom
  • C07C 67/27 from ortho-esters
  • C07C 67/44 by oxidation-reduction of aldehydes, e.g. Tishchenko reaction
  • C07C 67/46 from ketenes or polyketenes
  • C07C 67/465 by oligomerisation
  • C07C 67/47 by telomerisation

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