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IPC Subgroup
D01F 8/04

from synthetic polymers

Introduced: July 1974

Last revised: January 2006

Full Title

Conjugated, i.e. bi- or multicomponent, man-made filaments or the like; Manufacture thereof > from synthetic polymers

Classification Context

Section:
TEXTILES; PAPER
Class:
NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
Subclass:
CHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS

6 direct subcodes

Child Classifications

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  • D01F 8/06 with at least one polyolefin as constituent
  • D01F 8/08 with at least one polyacrylonitrile as constituent
  • D01F 8/1 with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
  • D01F 8/12 with at least one polyamide as constituent
  • D01F 8/14 with at least one polyester as constituent
  • D01F 8/16 with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds

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