D01H SPINNING OR TWISTING (twisting oakum D01G35/00; crimping or curling of fibres, filaments, or yarns D02G1/00)
Introduced: September 1968
Description
D01H covers mechanical processes and apparatus for spinning fibres into yarn or twisting multiple yarns together. This classification encompasses conventional spinning methods (ring spinning, open-end spinning, friction spinning) and modern techniques applied to natural fibres (cotton, wool, silk) and man-made fibres (synthetic and regenerated). It includes machinery components such as spindles, drafting systems, and twist insertion mechanisms, as well as process control methods for yarn production. Adjacent classifications address fibre preparation (D01C-D01G) and yarn finishing/treatment (D01D, D02).
Title
Titles differ between systems:
IPC: SPINNING OR TWISTING
CPC: SPINNING OR TWISTING (twisting oakum D01G35/00; crimping or curling of fibres, filaments, or yarns D02G1/00)
Full Title
Full titles differ between systems:
SPINNING OR TWISTING
SPINNING OR TWISTING (twisting oakum D01G35/00; crimping or curling of fibres, filaments, or yarns D02G1/00)
Additional Content IPC
Twisting oakum Crimping or curling of fibres, filaments or yarns
Of 11 combined children, 10 exist in both systems.
1 codes are CPC-only extensions.
Note: 1 CPC extensions are marked as secondary classification only.
4 shared codes have differing titles between IPC and CPC.
Child Classifications
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- D01H 1/00 Spinning or twisting machines in which the product is wound-up continuously (open-end spinning machines D01H4/00 ) +2 CPC IPC+CPC Available in IPC and CPC
- D01H 11/00 Arrangements for confining or removing dust, fly or the like (cleaning of running surfaces in open-end spinning machines D01H4/22) +3 CPC IPC+CPC Available in IPC and CPC
- D01H 13/00 Other common constructional features, details or accessories +1 CPC IPC+CPC Available in IPC and CPC
- D01H 15/00 Piecing arrangements (for open-end spinning machines D01H4/48) +2 CPC IPC+CPC Available in IPC and CPC
- D01H 3/00 Spinning or twisting machines in which the product is wound-up intermittently, e.g. mules IPC+CPC Available in IPC and CPC
- D01H 4/00 Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques since 1990 IPC+CPC Available in IPC and CPC
- D01H 7/00 Spinning or twisting arrangements (for open-end spinning D01H4/00) IPC+CPC Available in IPC and CPC
- D01H 9/00 Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations +2 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class D01,2013–2023, worldwide · Source: EPO PATSTAT
- NATIONAL DONG HWA UNIVERSITY 1,242
- MASCHINENFABRIK RIETER CH 1,162
- TORAY INDUSTRIES JP 1,093
- TORAY INDUSTRIES 802
- JIANGNAN UNIVERSITY 771
- WUHAN TEXTILE UNIVERSITY 663
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 653
- CHINESE ACADEMY OF SCIENCES 559
- LENZING AT 525
- MURATA MACHINERY 492
Top Applicants (CPC)
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