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
- 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