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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
D01F 6/44

from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds

Introduced: July 1974

Full Title

Full titles differ between systems:

IPC:

Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof > from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds

CPC:

Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof > from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds

IPC and CPC are identically structured here. All 6 subcodes exist in both systems.

IPC defines codes here since 1974.

Child Classifications

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  • D01F 6/46 of polyolefins since 1974 IPC+CPC Available in IPC and CPC
  • D01F 6/48 of polymers of halogenated hydrocarbons since 1974 IPC+CPC Available in IPC and CPC
  • D01F 6/50 of polyalcohols, polyacetals or polyketals since 1974 IPC+CPC Available in IPC and CPC
  • D01F 6/52 of polymers of unsaturated carboxylic acids or unsaturated esters since 1974 IPC+CPC Available in IPC and CPC
  • D01F 6/54 of polymers of unsaturated nitriles since 1974 IPC+CPC Available in IPC and CPC
  • D01F 6/56 of polymers of cyclic compounds with one carbon-to-carbon double bond in the side chain 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