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DIFF Main Group
D01H 13/00

Other common constructional features, details or accessories

Introduced: September 1968

Of 11 combined children, 10 exist in both systems.

1 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • D01H 13/005 CPC only CPC only
  • D01H 13/02 Roller arrangements not otherwise provided for IPC+CPC Available in IPC and CPC
  • D01H 13/08 Twist arresters IPC+CPC Available in IPC and CPC
  • D01H 13/12 Arrangements preventing snarls or inadvertent doubling of yarns IPC+CPC Available in IPC and CPC
  • D01H 13/26 Arrangements facilitating the inspection or testing of yarns or the like in connection with spinning or twisting IPC+CPC Available in IPC and CPC
  • D01H 13/28 Heating or cooling arrangements IPC+CPC Available in IPC and CPC
  • D01H 13/32 Counting, measuring, recording or registering devices 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