CPC Main Group
G04C 21/00 Producing acoustic time signals by electrical means
Filing statistics
CPC G04C 21/00 belongs to the parent subclass G04C, which recorded 5,767 patent applications worldwide between 2013 and 2023. Annual filings declined from 451 in 2013 to 303 in 2023 (-33%), peaking at 715 applications in 2016. The most active applicants in class G04 are THE SWATCH GROUP RESEARCH AND DEVELOPMENT (1,705 applications), ETA SA MANUFACTURE HORLOGERE SUISSE (1,443 applications) and SAMSUNG ELECTRONICS COMPANY (1,104 applications).
Source: EPO PATSTAT, worldwide filings
3 direct subcodes
Child Classifications
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- G04C 21/02 Constructional details (G04C21/04, G04C21/16 take precedence)
- G04C 21/04 Indicating the time of the day
- G04C 21/16 producing the signals at adjustable fixed times
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