Skip to content
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Main Group
D03D 51/00

Driving, starting, or stopping arrangements; Automatic stop motions

Introduced: September 1968

Of 10 combined children, 7 exist in both systems.

3 codes are CPC-only extensions.

Child Classifications

Navigate with arrow keys, Enter to open

  • D03D 51/002 CPC only CPC only
  • D03D 51/005 CPC only CPC only
  • D03D 51/007 CPC only CPC only
  • D03D 51/02 General arrangements of driving mechanism IPC+CPC Available in IPC and CPC
  • D03D 51/04 Manual controls IPC+CPC Available in IPC and CPC
  • D03D 51/12 for adjusting speed IPC+CPC Available in IPC and CPC
  • D03D 51/14 for reducing speed temporarily IPC+CPC Available in IPC and CPC
  • D03D 51/16 for varying speed cyclically IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class D03,2013–2023, worldwide · Source: EPO PATSTAT

  1. TORAY INDUSTRIES JP 461
  2. TORAY INDUSTRIES 324
  3. SHANDONG RIFA TEXTILE MACHINERY COMPANY 279
  4. TOYOTA INDUSTRIES CORPORATION 260
  5. JIANGSU COLLEGE OF ENGINEERING AND TECHNOLOGY 259
  6. ZHEJIANG SCI TECH UNIVERSITY 244
  7. PICANOL BE 213
  8. TOYOTA INDUSTRIES CORPORATION JP 192
  9. FEDERAL-MOGUL POWERTRAIN US 175
  10. NATIONAL DONG HWA UNIVERSITY 171

Top Applicants (CPC)

Class D03,2013–2023, worldwide · Source: EPO PATSTAT

  1. TORAY INDUSTRIES JP 517
  2. PICANOL BE 214
  3. TOYOTA INDUSTRIES CORPORATION 210
  4. JIANGSU COLLEGE OF ENGINEERING AND TECHNOLOGY 202
  5. SANKO TEKSTIL ISLETMELERI SAN. VE TIC. TR 196
  6. TOYOTA INDUSTRIES CORPORATION JP 193
  7. FEDERAL-MOGUL POWERTRAIN US 188
  8. SAFRAN AIRCRAFT ENGINES FR 187
  9. SAFRAN FR 168
  10. ASAHI KASEI JP 150