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PCE
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DIFF Subgroup
D04H 1/54

by welding together the fibres, e.g. by partially melting or dissolving (in combination with needling D04H1/485)

Introduced: September 1968

Title

Titles differ between systems:

IPC: by welding together the fibres, e.g. by partially melting or dissolving

CPC: by welding together the fibres, e.g. by partially melting or dissolving (in combination with needling D04H1/485)

Full Title

Full titles differ between systems:

IPC:

Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres > from fleeces or layers composed of fibres without existing or potential cohesive properties > by welding together the fibres, e.g. by partially melting or dissolving

CPC:

Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres > from fleeces or layers composed of fibres without existing or potential cohesive properties > by welding together the fibres, e.g. by partially melting or dissolving (in combination with needling D04H1/485)

Of 10 combined children, 9 exist in both systems.

1 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • D04H 1/5405 CPC only CPC only
  • D04H 1/552 by applying solvents or auxiliary agents since 2012 IPC+CPC Available in IPC and CPC
  • D04H 1/554 by radio-frequency heating since 2012 IPC+CPC Available in IPC and CPC
  • D04H 1/555 by ultrasonic heating since 2012 IPC+CPC Available in IPC and CPC
  • D04H 1/556 by infrared heating since 2012 IPC+CPC Available in IPC and CPC
  • D04H 1/558 in combination with mechanical or physical treatments other than embossing since 2012 IPC+CPC Available in IPC and CPC
  • D04H 1/559 the fibres being within layered webs since 2012 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class D04,2013–2023, worldwide · Source: EPO PATSTAT

  1. P&G (PROCTER & GAMBLE COMPANY) US 887
  2. KIMBERLY-CLARK CORPORATION US 727
  3. TORAY INDUSTRIES JP 692
  4. NIKE US 633
  5. SEIKO EPSON CORPORATION 537
  6. TORAY INDUSTRIES 528
  7. NIKE INNOVATE US 522
  8. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 479
  9. NATIONAL DONG HWA UNIVERSITY 439
  10. NINGBO CIXING COMPANY 425

Top Applicants (CPC)

Class D04,2013–2023, worldwide · Source: EPO PATSTAT

  1. P&G (PROCTER & GAMBLE COMPANY) US 1,303
  2. TORAY INDUSTRIES JP 899
  3. KIMBERLY-CLARK CORPORATION US 856
  4. NIKE INNOVATE US 852
  5. NIKE US 749
  6. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 569
  7. SHIMA SEIKI MANUFACTURING JP 469
  8. SAINT-GOBAIN ISOVER FR 468
  9. REIFENHAEUSER & COMPANY MASCHINENFABRIK DE 462
  10. NIKE INNOVATE NL 363