IPC Subgroup
C08G 18/4 High-molecular-weight compounds
Introduced: July 1974
Last revised: January 2006
Full Title
Polymeric products of isocyanates or isothiocyanates > with compounds having active hydrogen > characterised by the compounds used containing active hydrogen > High-molecular-weight compounds
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
11 direct subcodes
Child Classifications
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- C08G 18/42 Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G 18/48 Polyethers
- C08G 18/52 Polythioethers
- C08G 18/54 Polycondensates of aldehydes
- C08G 18/56 Polyacetals
- C08G 18/58 Epoxy resins
- C08G 18/6 Polyamides or polyester-amides
- C08G 18/61 Polysiloxanes
- C08G 18/62 Polymers of compounds having carbon-to-carbon double bonds
- C08G 18/63 Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
- C08G 18/64 Macromolecular compounds not provided for by groups
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