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.
IPC and CPC are identically structured here. All 6 subcodes exist in both systems.
5 shared codes have differing titles between IPC and CPC.
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) heading IPC+CPC Available in IPC and CPC
- D01C CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES heading IPC+CPC Available in IPC and CPC
- D01D MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS heading IPC+CPC Available in IPC and CPC
- D01F CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS heading IPC+CPC Available in IPC and CPC
- 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) heading IPC+CPC Available in IPC and CPC
- D01H SPINNING OR TWISTING (twisting oakum D01G35/00; crimping or curling of fibres, filaments, or yarns D02G1/00) heading +1 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
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)
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