IPC Subgroup
G01R 33/02 Measuring direction or magnitude of magnetic fields or magnetic flux
Introduced: September 1968
Last revised: January 2006
Full Title
Arrangements or instruments for measuring magnetic variables > Measuring direction or magnitude of magnetic fields or magnetic flux
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
Additional Content
Measuring direction or magnitude of the earth’s field for navigation or surveying For prospecting, for measuring the magnetic field of the earth
Related Keywords
measuring magnetic FLUXmeasuring magnetic field or flux
9 direct subcodes
Child Classifications
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- G01R 33/022 Measuring gradient
- G01R 33/025 Compensating stray fields
- G01R 33/028 Electrodynamic magnetometers
- G01R 33/032 using magneto-optic devices, e.g. Faraday
- G01R 33/035 using superconductive devices
- G01R 33/038 using permanent magnets, e.g. balances, torsion devices
- G01R 33/04 using the flux-gate principle
- G01R 33/06 using galvano-magnetic devices
- G01R 33/1 Plotting field distribution
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