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PCE
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DIFF Main Group
G04F 5/00

Apparatus for producing preselected time intervals for use as timing standards (generating clock signals for electric digital computers G06F1/04)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Apparatus for producing preselected time intervals for use as timing standards

CPC: Apparatus for producing preselected time intervals for use as timing standards (generating clock signals for electric digital computers G06F1/04)

Full Title

Full titles differ between systems:

IPC:

Apparatus for producing preselected time intervals for use as timing standards

CPC:

Apparatus for producing preselected time intervals for use as timing standards (generating clock signals for electric digital computers G06F1/04)

Additional Content IPC

Generating clock signals for electric digital computers

IPC and CPC are identically structured here. All 6 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • G04F 5/10 using electric or electronic resonators (G04F5/14 takes precedence) since 1974 IPC+CPC Available in IPC and CPC
  • G04F 5/12 using fluidic devices since 1974 IPC+CPC Available in IPC and CPC
  • G04F 5/16 using pulses produced by radio-isotopes since 1974 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