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PCE
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DIFF Subgroup
D01F 13/02

of cellulose, cellulose derivatives or proteins

Introduced: July 1974

Title

Titles differ between systems:

IPC: of cellulose, cellulose derivatives, or proteins

CPC: of cellulose, cellulose derivatives or proteins

Full Title

Full titles differ between systems:

IPC:

Recovery of starting material, waste material or solvents during the manufacture of man-made filaments or the like > of cellulose, cellulose derivatives, or proteins

CPC:

Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like > of cellulose, cellulose derivatives or proteins

No child classifications to compare. This is a leaf node in both 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