CPC Subgroup
G04B 17/20 Compensation of mechanisms for stabilising frequency
Full Title
Mechanisms for stabilising frequency > Compensation of mechanisms for stabilising frequency
4 direct subcodes
Child Classifications
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- G04B 17/22 for the effect of variations of temperature
- G04B 17/24 for the effect of variations of atmospheric pressure
- G04B 17/26 for the effect of variations of the impulses
- G04B 17/28 for the effect of imbalance of the weights, e.g. tourbillon
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