IPC Subgroup
G04R 20/04 Tuning or receiving; Circuits therefor
Introduced: January 2013
Full Title
Setting the time according to the time information carried or implied by the radio signal > the radio signal being sent by a satellite, e.g. GPS > Tuning or receiving; Circuits therefor
Classification Context
- Section:
- PHYSICS
- Class:
- HOROLOGY
- Subclass:
- RADIO-CONTROLLED TIME-PIECES
Top Applicants
Top 10 applicants by patent filingsfor 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