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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
D01F 6/28

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

Introduced: July 1974

Full Title

Full titles differ between systems:

IPC:

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

CPC:

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

IPC and CPC are identically structured here. All 7 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1974.

Child Classifications

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  • D01F 6/30 comprising olefins as the major constituent since 1974 IPC+CPC Available in IPC and CPC
  • D01F 6/32 comprising halogenated hydrocarbons as the major constituent since 1974 IPC+CPC Available in IPC and CPC
  • D01F 6/34 comprising unsaturated alcohols, acetals or ketals as the major constituent since 1974 IPC+CPC Available in IPC and CPC
  • D01F 6/36 comprising unsaturated carboxylic acids or unsaturated organic esters as the major constituent since 1974 IPC+CPC Available in IPC and CPC
  • D01F 6/38 comprising unsaturated nitriles as the major constituent since 1974 IPC+CPC Available in IPC and CPC
  • D01F 6/40 Modacrylic fibres, i.e. containing 35 to 85% acrylonitrile since 1974 IPC+CPC Available in IPC and CPC
  • D01F 6/42 comprising cyclic compounds containing one carbon-to-carbon double bond in the side chain as major constituent since 1974 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class D01,2013–2023, worldwide · Source: EPO PATSTAT

  1. TORAY INDUSTRIES JP 1,268
  2. MASCHINENFABRIK RIETER CH 1,200
  3. NATIONAL DONG HWA UNIVERSITY 955
  4. LENZING AT 602
  5. P&G (PROCTER & GAMBLE COMPANY) US 594
  6. WUHAN TEXTILE UNIVERSITY 494
  7. TRUETZSCHLER & COMPANY DE 453
  8. KOLON INDUSTRIES KR 433
  9. OERLIKON TEXTILE & COMPANY DE 430
  10. CHINESE ACADEMY OF SCIENCES 412