IPC Main Group
D01D 5/00 Formation of filaments, threads, or the like
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- TEXTILES; PAPER
- Class:
- NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- Subclass:
- MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
16 direct subcodes
Child Classifications
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- D01D 5/02 Starting the formation
- D01D 5/04 Dry spinning methods
- D01D 5/06 Wet spinning methods
- D01D 5/08 Melt-spinning methods
- D01D 5/11 Flash-spinning
- D01D 5/12 Stretch-spinning methods
- D01D 5/18 by means of rotating spinnerets
- D01D 5/2 with varying denier along their length
- D01D 5/22 with a crimped or curled structure; with a special structure to simulate wool
- D01D 5/24 with a hollow structure; Spinnerette packs therefor
- D01D 5/253 with a non-circular cross section; Spinnerette packs therefor
- D01D 5/26 Formation of staple fibres
- D01D 5/28 while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D 5/38 Formation of filaments, threads, or the like during polymerisation
- D01D 5/4 by applying a shearing force to a dispersion or solution of filament formable polymers, e.g. by stirring
- D01D 5/42 by cutting films into narrow ribbons or filaments or by fibrillation of films
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