CPC Main Group
C08G 69/00 Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule (products obtained from isocyanates or isothiocyanates C08G18/00; polyamide-imides C08G73/14)
7 direct subcodes
Child Classifications
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- C08G 69/02 Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G 69/38 Polyamides prepared from aldehydes and polynitriles
- C08G 69/40 Polyamides containing oxygen in the form of ether groups (C08G69/12, C08G69/32 take precedence)
- C08G 69/42 Polyamides containing atoms other than carbon, hydrogen, oxygen, and nitrogen (C08G69/12, C08G69/32 take precedence)
- C08G 69/44 Polyester-amides
- C08G 69/46 Post-polymerisation treatment
- C08G 69/48 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 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