CPC Subclass Not Allocatable
D01G PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING (winding or unwinding, conducting or guiding laps, webs, slivers or rovings in general, sliver or roving cans, depositing in sliver or roving cabs B65H; preparation of fibres for paper-making D21)
Description
D01G covers preparatory processes applied to natural or man-made fibres before they enter the spinning stage. This includes cleaning, carding, combing, blending, and other mechanical treatments that condition fibres to improve their properties for subsequent yarn production. The class encompasses equipment and methods for fibre alignment, matting, and preparation of sliver or roving. Processes that occur after spinning (such as yarn twisting or winding) are excluded and fall under different classifications.
19 direct subcodes
Child Classifications
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- D01G 1/00 Severing continuous filaments or long fibres, e.g. stapling
- D01G 11/00 Disintegrating fibre-containing articles to obtain fibres for re-use
- D01G 13/00 Mixing, e.g. blending, fibres; Mixing non-fibrous materials with fibres
- D01G 15/00 Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines (de-burring apparatus or machines operating independently D01B)
- D01G 17/00 Silk-dressing machines
- D01G 19/00 Combing machines
- D01G 21/00 Combinations of machines, apparatus, or processes, e.g. for continuous processing (D01G1/06, D01G9/12, D01G15/46, D01G15/94 take precedence)
- D01G 23/00 Feeding fibres to machines; Conveying fibres between machines (D01G21/00 takes precedence; intermediate feeds in carding machines D01G15/40)
- D01G 25/00 Lap-forming devices not integral with machines specified above (forming mats or batts of continuous filaments for non-woven fabrics D04H)
- D01G 27/00 Lap- or sliver-winding devices, e.g. for products of cotton scutchers, jute cards, or worsted gill boxes
- D01G 29/00 Arrangements for lubricating fibres, e.g. in gill boxes (processes involving the use of particular lubricants D06M15/00)
- D01G 3/00 Roughening of fibres
- D01G 31/00 Warning or safety devices, e.g. automatic fault detectors, stop motions (safety devices of general application F16P; indicating devices of general application G08B)
- D01G 33/00 Hand tools for treatment of fibres
- D01G 35/00 Treatment of oakum
- D01G 5/00 Separating, e.g. sorting, fibres (separating fibres of differing lengths in silk-dressing machines D01G17/00; in combing machines D01G19/00)
- D01G 7/00 Breaking or opening fibre bales
- D01G 9/00 Opening or cleaning fibres, e.g. scutching cotton (scutching flax or like fibres D01B; making cellulose wadding in papermaking machines D21F11/14)
- D01G 99/00 Subject matter not provided for in other groups of this subclass
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