DIFF Subgroup
G04B 1/10 with mainspring
Introduced: September 1968
Full Title
Driving mechanisms > with mainspring
Of 6 combined children, 5 exist in both systems.
1 codes are CPC-only extensions.
4 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G04B 1/14 Mainsprings; Bridles therefor (mainsprings with bridles G04B1/18; alloys C22C; springs in general F16F ) +1 CPC IPC+CPC Available in IPC and CPC
- G04B 1/16 Barrels; Arbors; Barrel axles (arrangements facilitating the removal of the mainspring G04B33/14) +1 CPC IPC+CPC Available in IPC and CPC
- G04B 1/18 Constructions for connecting the ends of the mainsprings with the barrel or the arbor +1 CPC IPC+CPC Available in IPC and CPC
- G04B 1/22 Compensation of changes in the motive power of the mainspring (by mechanical shaping of the mainspring G04B1/14 ) +1 CPC 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