Roughening of fibres

Filing statistics

CPC D01G 3/00 belongs to the parent subclass D01G, which recorded 7,206 patent applications worldwide between 2013 and 2023. Annual filings grew from 396 in 2013 to 620 in 2023 (+57%), peaking at 874 applications in 2018. The most active applicants in class D01 are TORAY INDUSTRIES (1,268 applications), MASCHINENFABRIK RIETER (1,200 applications) and NATIONAL DONG HWA UNIVERSITY (955 applications).

Source: EPO PATSTAT, worldwide filings