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DIFF Main Group
G04B 33/00

Calibers

Introduced: September 1968

IPC and CPC are identically structured here. All 8 subcodes exist in both systems.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • G04B 33/02 Circular calibers IPC+CPC Available in IPC and CPC
  • G04B 33/04 Non-circular calibers IPC+CPC Available in IPC and CPC
  • G04B 33/06 of extremely flat shape IPC+CPC Available in IPC and CPC
  • G04B 33/08 in which the gear train is arranged in different planes, e.g. parallel or inclined to each other (G04B33/10 takes precedence ) IPC+CPC Available in IPC and CPC
  • G04B 33/10 with seconds hand arranged in the centre of the dial IPC+CPC Available in IPC and CPC
  • G04B 33/12 for extremely long running times IPC+CPC Available in IPC and CPC
  • G04B 33/14 Calibers of which the mainsprings or barrels are easily removable (mainsprings G04B1/14; barrels, arbors G04B1/16 ) IPC+CPC Available in IPC and CPC
  • G04B 33/16 with arrangements affording protection of the clockwork against damage as a consequence of a rupture of the mainspring IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class G04,2013–2023, worldwide · Source: EPO PATSTAT

  1. THE SWATCH GROUP RESEARCH AND DEVELOPMENT CH 1,570
  2. ETA SA MANUFACTURE HORLOGERE SUISSE CH 1,409
  3. CASIO COMPUTER COMPANY 1,172
  4. SEIKO EPSON CORPORATION 1,100
  5. SAMSUNG ELECTRONICS COMPANY KR 768
  6. NIVAROX-FAR CH 750
  7. MONTRES BREGUET CH 707
  8. APPLE US 706
  9. SEIKO EPSON CORPORATION JP 648
  10. CITIZEN WATCH COMPANY 578

Top Applicants (CPC)

Class G04,2013–2023, worldwide · Source: EPO PATSTAT

  1. THE SWATCH GROUP RESEARCH AND DEVELOPMENT CH 1,705
  2. ETA SA MANUFACTURE HORLOGERE SUISSE CH 1,443
  3. SAMSUNG ELECTRONICS COMPANY KR 1,104
  4. APPLE US 1,038
  5. SEIKO EPSON CORPORATION 875
  6. NIVAROX-FAR CH 781
  7. CASIO COMPUTER COMPANY 734
  8. MONTRES BREGUET CH 715
  9. SEIKO EPSON CORPORATION JP 715
  10. OMEGA CH 555