D01 NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
Classification Context
- Section:
- TEXTILES; PAPER
- Class:
- 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
IPC D01 recorded 164,710 patent applications worldwide between 2013 and 2023, summed across its 6 subclasses. Annual filings grew from 10,602 in 2013 to 15,869 in 2023 (+50%), peaking at 19,362 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
6 direct subcodes
Child Classifications
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- D01B MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARY MATERIAL TO OBTAIN FIBRES OR FILAMENTS, e.g. FOR SPINNING
- 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 MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01F CHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01G PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01H SPINNING OR TWISTING
Top Applicants
Top 10 applicants by patent filings, 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