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PCE
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CPC Main Group
D01D 4/00

Spinnerette packs; Cleaning thereof (, D01D5/24, D01D5/253, D01D5/28 take precedence)

4 direct subcodes

Child Classifications

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  • D01D 4/04 Cleaning spinnerettes or other parts of the spinnerette packs (cleaning in general B08B)
  • D01D 4/06 Distributing spinning solution or melt to spinning nozzles
  • D01D 4/08 Supporting spinnerettes or other parts of spinnerette packs

Top Applicants

Top 10 applicants by patent filingsfor 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