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CPC Subgroup
D01F 2/10

Addition to the spinning solution or spinning bath of substances which exert their effect equally well in either

Full Title

Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof > from viscose > Composition of the spinning solution or the bath > Addition to the spinning solution or spinning bath of substances which exert their effect equally well in either

Filing statistics

CPC D01F 2/10 belongs to the parent subclass D01F, which recorded 55,662 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,956 in 2013 to 4,878 in 2023 (+65%), peaking at 6,684 applications in 2020. The most active applicants in class D01 are TORAY INDUSTRIES (1,268 applications), MASCHINENFABRIK RIETER (1,200 applications) and NATIONAL DONG HWA UNIVERSITY (955 applications).

Source: EPO PATSTAT, worldwide filings

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