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IPC Subgroup
G01P 3/5

for measuring linear speed

Introduced: September 1968

Last revised: January 2006

Full Title

Measuring linear or angular speed; Measuring differences of linear or angular speeds > Devices characterised by the use of electric or magnetic means > for measuring linear speed

Classification Context

Section:
PHYSICS
Class:
MEASURING; TESTING
Subclass:
MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT; INDICATING DIRECTION OF MOVEMENT

2 direct subcodes

Child Classifications

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  • G01P 3/52 by measuring amplitude of generated current or voltage
  • G01P 3/54 by measuring frequency of generated current or voltage

Top Applicants

Top 10 applicants by patent filingsfor 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