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
Navigate with arrow keys, Enter to open
- 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 33/14 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
- THE SWATCH GROUP RESEARCH AND DEVELOPMENT CH 1,570
- ETA SA MANUFACTURE HORLOGERE SUISSE CH 1,409
- CASIO COMPUTER COMPANY 1,172
- SEIKO EPSON CORPORATION 1,100
- SAMSUNG ELECTRONICS COMPANY KR 768
- NIVAROX-FAR CH 750
- MONTRES BREGUET CH 707
- APPLE US 706
- SEIKO EPSON CORPORATION JP 648
- CITIZEN WATCH COMPANY 578
Top Applicants (CPC)
Class G04,2013–2023, worldwide · Source: EPO PATSTAT
- THE SWATCH GROUP RESEARCH AND DEVELOPMENT CH 1,705
- ETA SA MANUFACTURE HORLOGERE SUISSE CH 1,443
- SAMSUNG ELECTRONICS COMPANY KR 1,104
- APPLE US 1,038
- SEIKO EPSON CORPORATION 875
- NIVAROX-FAR CH 781
- CASIO COMPUTER COMPANY 734
- MONTRES BREGUET CH 715
- SEIKO EPSON CORPORATION JP 715
- OMEGA CH 555