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PCE
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DIFF Subgroup
D01F 2/02

from solutions of cellulose in acids, bases or salts

Introduced: July 1974

Title

Titles differ between systems:

IPC: from solutions of cellulose in acids, bases, or salts

CPC: from solutions of cellulose in acids, bases or salts

Full Title

Full titles differ between systems:

IPC:

Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof > from solutions of cellulose in acids, bases, or salts

CPC:

Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof > from solutions of cellulose in acids, bases or salts

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

IPC defines codes here since 1974.

Child Classifications

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  • D01F 2/04 from cuprammonium solutions 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