Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances

Filing statistics

CPC C08G 2/00 belongs to the parent subclass C08G, which recorded 314,683 patent applications worldwide between 2013 and 2023. Annual filings grew from 21,661 in 2013 to 26,211 in 2023 (+21%), peaking at 32,594 applications in 2020. The most active applicants in class C08 are LG CHEM (15,432 applications), DOW GLOBAL TECHNOLOGIES (14,214 applications) and BASF (BADISCHE ANILIN & SODA FABRIK) (11,155 applications).

Source: EPO PATSTAT, worldwide filings

12 direct subcodes

Child Classifications

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C08G 2/02 Polymerisation initiated by wave energy or by particle radiation
C08G 2/04 Polymerisation by using compounds which act upon the molecular weight, e.g. chain-transferring agents
C08G 2/06 Catalysts (Catalysts in general B01J)
C08G 2/08 Polymerisation of formaldehyde
C08G 2/10 Polymerisation of cyclic oligomers of formaldehyde
C08G 2/12 Polymerisation of acetaldehyde or cyclic oligomers thereof
C08G 2/14 Polymerisation of single aldehydes not provided for in groups C08G2/08 - C08G2/12
C08G 2/16 Polymerisation of single ketones
C08G 2/18 Copolymerisation of aldehydes or ketones
C08G 2/28 Post-polymerisation treatments
C08G 2/30 Chemical modification by after-treatment
C08G 2/38 Block or graft polymers prepared by polymerisation of aldehydes or ketones on to macromolecular compounds

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