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IPC Subclass
D01G

PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING

Introduced: September 1968

Classification Context

Section:
TEXTILES; PAPER
Class:
NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
Subclass:
PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING

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.

Related Keywords

preliminary treatment of FIBRESproducing ROVING(S) for spinningSLUBBING

19 direct subcodes

Child Classifications

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  • D01G 13/00 Mixing, e.g. blending, fibres; Mixing non-fibrous materials with fibres
  • D01G 17/00 Silk-dressing machines
  • D01G 21/00 Combinations of machines, apparatus, or processes, e.g. for continuous processing
  • D01G 25/00 Lap-forming devices not integral with machines specified above
  • D01G 29/00 Arrangements for lubricating fibres, e.g. in gill boxes
  • D01G 3/00 Roughening of fibres
  • D01G 31/00 Warning or safety devices, e.g. automatic fault detectors, stop motions
  • D01G 33/00 Hand tools for treatment of fibres
  • D01G 35/00 Treatment of oakum
  • D01G 5/00 Separating, e.g. sorting, fibres
  • 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

  1. NATIONAL DONG HWA UNIVERSITY 1,242
  2. MASCHINENFABRIK RIETER CH 1,162
  3. TORAY INDUSTRIES JP 1,093
  4. TORAY INDUSTRIES 802
  5. JIANGNAN UNIVERSITY 771
  6. WUHAN TEXTILE UNIVERSITY 663
  7. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 653
  8. CHINESE ACADEMY OF SCIENCES 559
  9. LENZING AT 525
  10. MURATA MACHINERY 492