IPC Subgroup
C08G 65/02 from cyclic ethers by opening of the heterocyclic ring
Introduced: July 1974
Last revised: January 2006
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
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- Subclass:
- MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
Related Keywords
polymerisation of cyclic ethers
4 direct subcodes
Child Classifications
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- C08G 65/04 from cyclic ethers only
- C08G 65/26 from cyclic ethers and other compounds
- C08G 65/3 Post-polymerisation treatment, e.g. recovery, purification, drying
- C08G 65/32 Polymers modified by chemical after-treatment
Top Applicants
Top 10 applicants by patent filingsfor class C08, 2013–2023, worldwide · Source: EPO PATSTAT
- LG CHEM KR 14,262
- DOW GLOBAL TECHNOLOGIES US 12,486
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,858
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,877
- CHINESE ACADEMY OF SCIENCES 6,993
- FUJIFILM JP 5,049
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 4,923
- SHIN-ETSU CHEMICAL COMPANY JP 4,517
- BOREALIS AT 4,213
- ARKEMA FR 4,098