G04C 23/38 Mechanisms measuring a chosen time interval independently of the time of day at which the interval starts
Introduced: September 1968
Last revised: January 2006
Full Title
Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals > Mechanisms measuring a chosen time interval independently of the time of day at which the interval starts
Classification Context
- Section:
- PHYSICS
- Class:
- HOROLOGY
- Subclass:
- ELECTROMECHANICAL CLOCKS OR WATCHES
Filing statistics
IPC G04C 23/38 belongs to the parent subclass G04C, which recorded 5,757 patent applications worldwide between 2013 and 2023. Annual filings declined from 653 in 2013 to 279 in 2023 (-57%), peaking at 665 applications in 2015. The most active applicants in class G04 are THE SWATCH GROUP RESEARCH AND DEVELOPMENT (1,570 applications), ETA SA MANUFACTURE HORLOGERE SUISSE (1,409 applications) and CASIO COMPUTER COMPANY (1,172 applications).
Source: EPO PATSTAT, worldwide filings
4 direct subcodes
Child Classifications
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- G04C 23/4 using continuously-running mechanism
- G04C 23/42 acting only at the end of a single time interval
- G04C 23/48 acting at the ends of successive time intervals
- G04C 23/5 with provision for modification of the interval(s) by external influences
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