DIFF Subgroup
G04B 17/30 Rotating governors, e.g. centrifugal governors, fan governors (for striking mechanism G04B21/06 )
Introduced: September 1968
Title
Titles differ between systems:
IPC: Rotating governors, e.g. centrifugal governors, fan governors
CPC: Rotating governors, e.g. centrifugal governors, fan governors (for striking mechanism G04B21/06 )
Full Title
Full titles differ between systems:
IPC:
Mechanisms for stabilising frequency > Rotating governors, e.g. centrifugal governors, fan governors
CPC:
Mechanisms for stabilising frequency > Rotating governors, e.g. centrifugal governors, fan governors (for striking mechanism G04B21/06 )
No child classifications to compare. This is a leaf node in both 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