Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
G01P 3/481

of pulse signals

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Measuring linear or angular speed; Measuring differences of linear or angular speeds > Devices characterised by the use of electric or magnetic means > for measuring angular speed > by measuring frequency of generated current or voltage > of pulse signals

CPC:

Measuring linear or angular speed; Measuring differences of linear or angular speeds (G01P5/00 - G01P11/00 take precedence; ; counting mechanisms G06M) > Devices characterised by the use of electric or magnetic means (G01P3/66 takes precedence; measuring electric or magnetic values in general G01R) > for measuring angular speed (G01P3/56 takes precedence) > by measuring frequency of generated current or voltage > of pulse signals

Of 8 combined children, 7 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

Navigate with arrow keys, Enter to open

  • G01P 3/4815 CPC only CPC only
  • G01P 3/482 delivered by nuclear radiation detectors since 1980 IPC+CPC Available in IPC and CPC
  • G01P 3/483 delivered by variable capacitance detectors since 1980 IPC+CPC Available in IPC and CPC
  • G01P 3/484 delivered by contact-making switches since 1980 IPC+CPC Available in IPC and CPC
  • G01P 3/486 delivered by photo-electric detectors since 1980 IPC+CPC Available in IPC and CPC
  • G01P 3/487 delivered by rotating magnets since 1980 IPC+CPC Available in IPC and CPC
  • G01P 3/488 delivered by variable reluctance detectors since 1980 IPC+CPC Available in IPC and CPC
  • G01P 3/489 Digital circuits therefor since 1980 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class G01,2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 41,447
  2. CHINESE ACADEMY OF SCIENCES 32,952
  3. ROBERT BOSCH DE 16,470
  4. SAMSUNG ELECTRONICS COMPANY KR 10,052
  5. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 9,573
  6. ZHEJIANG UNIVERSITY 9,529
  7. GUANGDONG POWER GRID CORPORATION 8,615
  8. TSINGHUA UNIVERSITY 7,805
  9. HALLIBURTON ENERGY SERVICES GROUP US 7,796
  10. QUALCOMM US 7,171

Top Applicants (CPC)

Class G01,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 21,460
  2. ROBERT BOSCH DE 17,801
  3. SGCC(STATE GRID CORPORATION OF CHINA) 17,347
  4. SAMSUNG ELECTRONICS COMPANY KR 13,192
  5. QUALCOMM US 9,900
  6. HALLIBURTON ENERGY SERVICES GROUP US 9,742
  7. PHILIPS ELECTRONICS NL 7,249
  8. MITSUBISHI ELECTRIC CORPORATION JP 6,503
  9. ZHEJIANG UNIVERSITY 6,414
  10. DENSO CORPORATION JP 6,382