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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

Filing statistics

IPC D01D 5/00 belongs to the parent subclass D01D, which recorded 48,557 patent applications worldwide between 2013 and 2023. Annual filings grew from 3,204 in 2013 to 4,725 in 2023 (+47%), peaking at 6,066 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

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 5/11 Flash-spinning
  • D01D 5/18 by means of rotating spinnerets
  • D01D 5/2 with varying denier along their length
  • D01D 5/253 with a non-circular cross section; Spinnerette packs therefor
  • D01D 5/26 Formation of staple fibres
  • 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

  1. NATIONAL DONG HWA UNIVERSITY 1,242
  2. MASCHINENFABRIK RIETER CH 1,162
  3. TORAY INDUSTRIES JP 1,093
  4. TORAY INDUSTRIES 802
  5. JIANGNAN UNIVERSITY 771
  6. WUHAN TEXTILE UNIVERSITY 663
  7. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 653
  8. CHINESE ACADEMY OF SCIENCES 559
  9. LENZING AT 525
  10. MURATA MACHINERY 492