IPC Subgroup
C07C 41/18 by reactions not forming ether-oxygen bonds
Introduced: January 1980
Last revised: January 2006
Full Title
Preparation of ethers; Preparation of compounds having groups, groups or groups > Preparation of ethers > by reactions not forming ether-oxygen bonds
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC CHEMISTRY
- Subclass:
- ACYCLIC OR CARBOCYCLIC COMPOUNDS
6 direct subcodes
Child Classifications
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- C07C 41/2 by hydrogenation of carbon-to-carbon double or triple bonds
- C07C 41/22 by introduction of halogen; by substitution of halogen atoms by other halogen atoms
- C07C 41/24 by elimination of halogen, 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 41/3 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
- CHINESE ACADEMY OF SCIENCES 12,697
- ROCHE CH 11,347
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 11,024
- NOVARTIS CH 9,356
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 8,531
- BRISTOL-MYERS SQUIBB COMPANY US 7,320
- LG CHEM KR 7,245
- REGENERON PHARMACEUTICALS US 6,816
- HARVARD UNIVERSITY US 6,190
- GENENTECH US 5,922