CPC Main Group
D02G 1/00 Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics (yarns per se D02G3/00; during formation of artificial filaments, threads, or the like D01D5/22; general aspects of chemical treatment D06M)
Filing statistics
CPC D02G 1/00 belongs to the parent subclass D02G, which recorded 23,853 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,240 in 2013 to 1,559 in 2023 (+26%), peaking at 3,107 applications in 2016. The most active applicants in class D02 are TORAY INDUSTRIES (443 applications), OERLIKON TEXTILE & COMPANY (242 applications) and KOLON INDUSTRIES (232 applications).
Source: EPO PATSTAT, worldwide filings
11 direct subcodes
Child Classifications
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- D02G 1/02 by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
- D02G 1/10 using knife edges, e.g. heated knife edges, for edge crimping
- D02G 1/12 using stuffer boxes
- D02G 1/14 using grooved rollers or gear-wheel-type members
- D02G 1/16 using jets or streams of turbulent gases, e.g. air, steam
- D02G 1/18 by combining fibres, filaments, or yarns, having different shrinkage characteristics
- D02G 1/20 Combinations of two or more of the above-mentioned operations or devices; After-treatments for fixing crimp or curl
Top Applicants
Top 10 applicants by patent filingsfor class D02, 2013–2023, worldwide · Source: EPO PATSTAT
- TORAY INDUSTRIES JP 443
- OERLIKON TEXTILE & COMPANY DE 242
- KOLON INDUSTRIES KR 232
- CONTINENTAL REIFEN DE 204
- JIANGNAN UNIVERSITY 193
- COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN FR 178
- TMT MACHINERY 168
- NATIONAL DONG HWA UNIVERSITY 163
- WUHAN TEXTILE UNIVERSITY 153
- P&G (PROCTER & GAMBLE COMPANY) US 131