CPC Subgroup
C07C 41/18 by reactions not forming ether-oxygen bonds
Full Title
Preparation of ethers; Preparation of compounds having [IMAGE cpc-sch-C07C-0958.gif] groups,[IMAGE cpc-sch-C07C-0959.gif] groups or[IMAGE cpc-sch-C07C-0960.gif] groups > Preparation of ethers > by reactions not forming ether-oxygen bonds
6 direct subcodes
Child Classifications
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- C07C 41/20 by hydrogenation of carbon-to-carbon double or triple bonds
- C07C 41/22 by introduction of halogens; by substitution of halogen atoms by other halogen atoms
- C07C 41/24 by elimination of halogens, e.g. elimination of HCl
- C07C 41/26 by introduction of hydroxy or O-metal groups
- C07C 41/28 from acetals, e.g. by dealcoholysis
- C07C 41/30 by increasing the number of carbon atoms, e.g. by oligomerisation
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