CPC Subgroup
C08G 65/06 Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
Full Title
Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule > from cyclic ethers by opening of the heterocyclic ring > from cyclic ethers only > Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
3 direct subcodes
Child Classifications
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- C08G 65/08 Saturated oxiranes
- C08G 65/14 Unsaturated oxiranes
- C08G 65/16 Cyclic ethers having four or more ring atoms
Top Applicants
Top 10 applicants by patent filingsfor class C08, 2013–2023, worldwide · Source: EPO PATSTAT
- LG CHEM KR 15,432
- DOW GLOBAL TECHNOLOGIES US 14,214
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 11,155
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 6,455
- FUJIFILM JP 6,178
- CHINESE ACADEMY OF SCIENCES 5,569
- SHIN-ETSU CHEMICAL COMPANY JP 5,506
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 5,443
- TORAY INDUSTRIES JP 4,635
- NITTO DENKO CORPORATION JP 4,620