Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule (polyester-amides C08G69/44; polyester-imides C08G73/16)

8 direct subcodes

Child Classifications

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C08G 63/005
C08G 63/02 Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
C08G 63/64 Polyesters containing both carboxylic ester groups and carbonate groups
C08G 63/66 Polyesters containing oxygen in the form of ether groups (C08G63/42, C08G63/58 take precedence)
C08G 63/68 Polyesters containing atoms other than carbon, hydrogen and oxygen (C08G63/64 takes precedence)
C08G 63/78 Preparation processes
C08G 63/88 Post-polymerisation treatment
C08G 63/91 Polymers modified by chemical after-treatment

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