CPC Main Group
G04R 20/00 Setting the time according to the time information carried or implied by the radio signal
5 direct subcodes
Child Classifications
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- G04R 20/02 the radio signal being sent by a satellite, e.g. GPS
- G04R 20/08 the radio signal being broadcast from a long-wave call sign, e.g. DCF77, JJY40, JJY60, MSF60 or WWVB
- G04R 20/14 the radio signal being a telecommunication standard signal, e.g. GSM
- G04R 20/20 the radio signal being an AM/FM standard signal, e.g. RDS
- G04R 20/26 the radio signal being a near-field communication signal
Top Applicants
Top 10 applicants by patent filingsfor 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