CPC Subgroup
C07C 67/28 by modifying the hydroxylic moiety of the ester, such modification not being an introduction of an ester group
Full Title
Preparation of carboxylic acid esters > by modifying the hydroxylic moiety of the ester, such modification not being an introduction of an ester group
5 direct subcodes
Child Classifications
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- C07C 67/283 by hydrogenation of unsaturated carbon-to-carbon bonds
- C07C 67/287 by introduction of halogen; by substitution of halogen atoms by other halogen atoms
- C07C 67/29 by introduction of oxygen-containing functional groups
- C07C 67/293 by isomerisation; by change of size of the carbon skeleton
- C07C 67/297 by splitting-off hydrogen or functional groups; by hydrogenolysis of functional groups
Top Applicants
Top 10 applicants by patent filingsfor class C07, 2013–2023, worldwide · Source: EPO PATSTAT
- ROCHE CH 12,683
- NOVARTIS CH 10,775
- CHINESE ACADEMY OF SCIENCES 10,619
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,511
- REGENERON PHARMACEUTICALS US 8,426
- BRISTOL-MYERS SQUIBB COMPANY US 7,979
- LG CHEM KR 7,978
- HARVARD UNIVERSITY US 7,706
- UNIVERSITY OF CALIFORNIA US 7,455
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,219