MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT; INDICATING DIRECTION OF MOVEMENT

Introduced: September 1968

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

Description

G01P covers instruments and methods for measuring kinematic quantities including linear and angular velocity, acceleration, deceleration, and shock or impact forces. The subclass encompasses accelerometers, speedometers, tachometers, gyroscopes, and motion detection devices across mechanical, electrical, electromagnetic, and optical measurement principles. It also includes devices that indicate whether motion is occurring or absent, and systems that determine the direction of movement, with applications ranging from automotive and aerospace to seismic monitoring and consumer electronics.

Filing statistics

IPC subclass G01P recorded 60,027 patent applications worldwide between 2013 and 2023. Annual filings grew from 4,116 in 2013 to 6,048 in 2023 (+47%), peaking at 6,844 applications in 2020. The most active applicants in class G01 are SGCC(STATE GRID CORPORATION OF CHINA) (41,447 applications), CHINESE ACADEMY OF SCIENCES (32,952 applications) and ROBERT BOSCH (16,470 applications).

Source: EPO PATSTAT, worldwide filings

In class comparison

G01P ranks 14th of 18 subclasses with filings in G01, with 60,027 applications between 2013 and 2023, 1.3% of the class. Annual filings grew 47% from 2013 to 2023, below the class as a whole (+138%).

Top 10 of 18 subclasses of class G01 by patent applications, 2013–2023
Rank	Subclass	Title	Applications	Share
1	G01N, Investigating or Analysing Materials by Determining Their Chemical or Physical Properties	Investigating or Analysing Materials by Determining Their Chemical or Physical Properties	1,640,918	34.9%
2	G01R, Measuring Electric Variables; Measuring Magnetic Variables	Measuring Electric Variables; Measuring Magnetic Variables	598,083	12.7%
3	G01B, Measuring Length, Thickness or Similar Linear Dimensions; Measuring Angles; Measuring Areas; Measuring Irregularities of Surfaces or Contours	Measuring Length, Thickness or Similar Linear Dimensions; Measuring Angles; Measuring Areas; Measuring Irregularities of Surfaces or Contours	395,662	8.4%
4	G01S, Radio Direction-Finding; Radio Navigation; Determining Distance or Velocity by Use of Radio Waves; Locating or Presence-Detecting by Use of the Reflection or Reradiation of Radio Waves; Analogous Arrangements Using Other Waves	Radio Direction-Finding; Radio Navigation; Determining Distance or Velocity by Use of Radio Waves; Locating or Presence-Detecting by Use of the Reflection or Reradiation of Radio Waves; Analogous Arrangements Using Other Waves	358,214	7.6%
5	G01M, Testing Static or Dynamic Balance of Machines or Structures; Testing of Structures or Apparatus, Not Otherwise Provided for	Testing Static or Dynamic Balance of Machines or Structures; Testing of Structures or Apparatus, Not Otherwise Provided for	339,843	7.2%
6	G01C, Measuring Distances, Levels or Bearings; Surveying; Navigation; Gyroscopic Instruments; Photogrammetry or Videogrammetry	Measuring Distances, Levels or Bearings; Surveying; Navigation; Gyroscopic Instruments; Photogrammetry or Videogrammetry	271,474	5.8%
7	G01D, Measuring Not Specially Adapted for a Specific Variable; Arrangements for Measuring Two or More Variables Not Covered by a Single Other Subclass; Tariff Metering Apparatus; Transferring or Transducing Arrangements Not Specially Adapted for a Specific Variable; Measuring or Testing Not Otherwise Provided for	Measuring Not Specially Adapted for a Specific Variable; Arrangements for Measuring Two or More Variables Not Covered by a Single Other Subclass; Tariff Metering Apparatus; Transferring or Transducing Arrangements Not Specially Adapted for a Specific Variable; Measuring or Testing Not Otherwise Provided for	207,395	4.4%
8	G01F, Measuring Volume, Volume Flow, Mass Flow, or Liquid Level; Metering by Volume	Measuring Volume, Volume Flow, Mass Flow, or Liquid Level; Metering by Volume	157,084	3.3%
9	G01L, Measuring Force, Stress, Torque, Work, Mechanical Power, Mechanical Efficiency, or Fluid Pressure	Measuring Force, Stress, Torque, Work, Mechanical Power, Mechanical Efficiency, or Fluid Pressure	145,069	3.1%
10	G01K, Measuring Temperature; Measuring Quantity of Heat; Thermally-Sensitive Elements Not Otherwise Provided for	Measuring Temperature; Measuring Quantity of Heat; Thermally-Sensitive Elements Not Otherwise Provided for	118,108	2.5%
14	G01P	Measuring Linear or Angular Speed, Acceleration, Deceleration or Shock; Indicating Presence or Absence of Movement; Indicating Direction of Movement	60,027	1.3%

Source: EPO PATSTAT, worldwide filings

Additional Content

Limiting references

Combined measuring devices measuring two or more variables of movement, e.g. distance, speed, acceleration Measuring volume flow or mass flow Measuring the velocity of ultrasonic, sonic (sound) or infrasonic waves Measuring velocity of light For determining direction or velocity of solid objects by reflection or reradiation of radio or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation Measuring speed of nuclear or X-radiation

Application references

Measuring or recording blood flow Monitoring speed or acceleration of electrically-propelled vehicles Vehicle optical or lighting devices adapted to indicate speed Control, warning or like safety means along the route or between vehicles or vehicle trains Measuring acceleration of gravity

Related Keywords

measuring ACCELERATIONmeasuring CURRENT(S) in flowing fluidsmeasuring DECELERATIONmeasuring DIRECTION of fluid flowmeasuring DRAG(S)measuring speed of FLUID(S)LOG(S) for measuring speedMACHMETERSmeasuring RETARDATIONmeasuring SHOCK(S)measuring SPEEDTACHOMETERSmeasuring speed or acceleration of VEHICLES

8 direct subcodes

Child Classifications

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G01P 1/00 Details of instruments
G01P 11/00 Measuring average value of speed
G01P 13/00 Indicating or recording presence or absence of movement; Indicating or recording of direction of movement
G01P 15/00 Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
G01P 21/00 Testing or calibrating of apparatus or devices covered by the other groups of this subclass
G01P 3/00 Measuring linear or angular speed; Measuring differences of linear or angular speeds
G01P 5/00 Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
G01P 7/00 Measuring speed by integrating acceleration

Top Applicants

Top 10 applicants by patent filingsfor class G01, 2013–2023, worldwide · Source: EPO PATSTAT

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