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IPC Subgroup
D01F 6/28

from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds

Introduced: July 1974

Last revised: January 2006

Full Title

Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof > from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds

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

7 direct subcodes

Child Classifications

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  • D01F 6/3 comprising olefins as the major constituent
  • D01F 6/32 comprising halogenated hydrocarbons as the major constituent
  • D01F 6/34 comprising unsaturated alcohols, acetals, or ketals as the major constituent
  • D01F 6/36 comprising unsaturated carboxylic acids or unsaturated organic esters as the major constituent
  • D01F 6/38 comprising unsaturated nitriles as the major constituent
  • D01F 6/4 Modacrylic fibres, i.e. containing 35 to 85% acrylonitrile
  • D01F 6/42 comprising cyclic compounds containing one carbon-to-carbon double bond in the side chain as major constituent

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