Treatment of rubber before vulcanisation, not provided for in groups C08C1/00 - C08C3/02

Filing statistics

CPC C08C 4/00 belongs to the parent subclass C08C, which recorded 10,290 patent applications worldwide between 2013 and 2023. Annual filings declined from 910 in 2013 to 568 in 2023 (-38%), peaking at 1,251 applications in 2016. 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