CPC Subgroup
D01D 1/06 Feeding liquid to the spinning head (constructions of pumps F04)
Full Title
Treatment of filament-forming or like material (working of plastics or substances in a plastic state, in general B29) > Feeding liquid to the spinning head (constructions of pumps F04)
2 direct subcodes
Child Classifications
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- D01D 1/09 Control of pressure, temperature or feeding rate
Top Applicants
Top 10 applicants by patent filingsfor class D01, 2013–2023, worldwide · Source: EPO PATSTAT
- TORAY INDUSTRIES JP 1,268
- MASCHINENFABRIK RIETER CH 1,200
- NATIONAL DONG HWA UNIVERSITY 955
- LENZING AT 602
- P&G (PROCTER & GAMBLE COMPANY) US 594
- WUHAN TEXTILE UNIVERSITY 494
- TRUETZSCHLER & COMPANY DE 453
- KOLON INDUSTRIES KR 433
- OERLIKON TEXTILE & COMPANY DE 430
- CHINESE ACADEMY OF SCIENCES 412