SPINNING OR TWISTING

Introduced: September 1968

Classification Context

Section:: TEXTILES; PAPER
Class:: NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
Subclass:: SPINNING OR TWISTING

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).

Filing statistics

IPC subclass D01H recorded 29,535 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,964 in 2013 to 2,979 in 2023 (+52%), peaking at 3,678 applications in 2020. The most active applicants in class D01 are NATIONAL DONG HWA UNIVERSITY (1,242 applications), MASCHINENFABRIK RIETER (1,162 applications) and TORAY INDUSTRIES (1,093 applications).

Source: EPO PATSTAT, worldwide filings

Additional Content

Twisting oakum Crimping or curling of fibres, filaments or yarns

Related Keywords

SPINNING of yarnspinning, twisting or drafting TEXTILE(S)TWISTING in textile manufacture

10 direct subcodes

Child Classifications

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D01H 1/00 Spinning or twisting machines in which the product is wound-up continuously
D01H 11/00 Arrangements for confining or removing dust, fly or the like
D01H 13/00 Other common constructional features, details or accessories
D01H 15/00 Piecing arrangements
D01H 17/00 Hand tools
D01H 3/00 Spinning or twisting machines in which the product is wound-up intermittently, e.g. mules
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
D01H 5/00 Drafting machines or arrangements
D01H 7/00 Spinning or twisting arrangements
D01H 9/00 Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations

Top Applicants

Top 10 applicants by patent filingsfor 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