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DIFF Main Group
G04F 7/00

Apparatus for measuring unknown time intervals by non-electric means (using fluidic means G04F13/06)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Apparatus for measuring unknown time intervals by non-electric means

CPC: Apparatus for measuring unknown time intervals by non-electric means (using fluidic means G04F13/06)

Full Title

Full titles differ between systems:

IPC:

Apparatus for measuring unknown time intervals by non-electric means

CPC:

Apparatus for measuring unknown time intervals by non-electric means (using fluidic means G04F13/06)

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

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  • G04F 7/02 by measuring the distance of fall or the final velocity of a falling body IPC+CPC Available in IPC and CPC
  • G04F 7/10 Means used apart from the time-piece for starting or stopping same IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class G04,2013–2023, worldwide · Source: EPO PATSTAT

  1. THE SWATCH GROUP RESEARCH AND DEVELOPMENT CH 1,705
  2. ETA SA MANUFACTURE HORLOGERE SUISSE CH 1,443
  3. SAMSUNG ELECTRONICS COMPANY KR 1,104
  4. APPLE US 1,038
  5. SEIKO EPSON CORPORATION 875
  6. NIVAROX-FAR CH 781
  7. CASIO COMPUTER COMPANY 734
  8. MONTRES BREGUET CH 715
  9. SEIKO EPSON CORPORATION JP 715
  10. OMEGA CH 555