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IPC Subgroup
G04R 40/06

by computing the time value implied by the radio signal

Introduced: January 2013

Full Title

Correcting the clock frequency > by computing the time value implied by the radio signal

Classification Context

Section:
PHYSICS
Class:
HOROLOGY
Subclass:
RADIO-CONTROLLED TIME-PIECES

Filing statistics

IPC G04R 40/06 belongs to the parent subclass G04R, which recorded 4,693 patent applications worldwide between 2013 and 2023. Annual filings declined from 325 in 2013 to 302 in 2023 (-7%), peaking at 536 applications in 2016. 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

Top Applicants

Top 10 applicants by patent filingsfor class G04, 2013–2023, worldwide · Source: EPO PATSTAT

  1. THE SWATCH GROUP RESEARCH AND DEVELOPMENT CH 1,570
  2. ETA SA MANUFACTURE HORLOGERE SUISSE CH 1,409
  3. CASIO COMPUTER COMPANY 1,172
  4. SEIKO EPSON CORPORATION 1,100
  5. SAMSUNG ELECTRONICS COMPANY KR 768
  6. NIVAROX-FAR CH 750
  7. MONTRES BREGUET CH 707
  8. APPLE US 706
  9. SEIKO EPSON CORPORATION JP 648
  10. CITIZEN WATCH COMPANY 578