DIFF Main Group
G04C 17/00 Indicating the time optically by electric means (G04C19/00 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Indicating the time optically by electric means
CPC: Indicating the time optically by electric means (G04C19/00 takes precedence)
Full Title
Full titles differ between systems:
IPC:
Indicating the time optically by electric means
CPC:
Indicating the time optically by electric means (G04C19/00 takes precedence)
Additional Content IPC
Producing optical time signals at prefixed times by electric means
CPC subdivides this area 7x more granularly than IPC with 6 additional codes.
6 codes are CPC-only extensions.
Child Classifications
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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