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IPC Subgroup
D04H 1/54

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

Introduced: September 1968

Last revised: January 2012

Full Title

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

Classification Context

Section:
TEXTILES; PAPER
Class:
BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
Subclass:
MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING

9 direct subcodes

Child Classifications

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  • D04H 1/541 Composite fibres e.g. sheath-core, sea-island or side-by-side; Mixed fibres
  • D04H 1/552 by applying solvents or auxiliary agents
  • D04H 1/554 by radio-frequency heating
  • D04H 1/555 by ultrasonic heating
  • D04H 1/556 by infrared heating
  • D04H 1/558 in combination with mechanical or physical treatments other than embossing
  • D04H 1/559 the fibres being within layered webs
  • D04H 1/56 in association with fibre formation, e.g. immediately following extrusion of staple fibres

Top Applicants

Top 10 applicants by patent filingsfor 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