D01 NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
Description
Class D01 encompasses the production, treatment, and properties of natural and synthetic threads or fibres, as well as the spinning processes that transform raw materials into spinnable forms. This includes fibre preparation from natural sources (such as animal, plant, or mineral origins), manufacture of man-made fibres through chemical processes, and mechanical spinning operations that twist and combine fibres into threads or yarns. The classification covers fibre characteristics, spinning machinery, twist insertion methods, and intermediate processes between raw fibre and finished thread suitable for textile weaving or knitting applications.
Filing statistics
CPC D01 recorded 116,713 patent applications worldwide between 2013 and 2023, summed across its 6 subclasses. Annual filings grew from 6,089 in 2013 to 9,921 in 2023 (+63%), peaking at 14,091 applications in 2020. The most active applicants in class D01 are TORAY INDUSTRIES (1,268 applications), MASCHINENFABRIK RIETER (1,200 applications) and NATIONAL DONG HWA UNIVERSITY (955 applications).
Source: EPO PATSTAT, worldwide filings
6 direct subcodes
Child Classifications
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- D01B MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARY MATERIAL TO OBTAIN FIBRES OF FILAMENTS, e.g. FOR SPINNING (crude extraction of asbestos fibres from ores B03B; apparatus for retting D01C)
- D01C CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
- D01D MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01F CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- 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)
- D01H SPINNING OR TWISTING (twisting oakum D01G35/00; crimping or curling of fibres, filaments, or yarns D02G1/00)
Top Applicants
Top 10 applicants by patent filings, 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