CPC Main Group
G01R 33/00 Arrangements or instruments for measuring magnetic variables
14 direct subcodes
Child Classifications
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- G01R 33/02 Measuring direction or magnitude of magnetic fields or magnetic flux (G01R33/20 takes precedence)
- G01R 33/12 Measuring magnetic properties of articles or specimens of solids or fluids (involving magnetic resonance G01R33/20)
- G01R 33/20 involving magnetic resonance (medical aspects A61B5/055; magnetic resonance gyrometers G01C19/60)
Top Applicants
Top 10 applicants by patent filingsfor class G01, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 21,460
- ROBERT BOSCH DE 17,801
- SGCC(STATE GRID CORPORATION OF CHINA) 17,347
- SAMSUNG ELECTRONICS COMPANY KR 13,192
- QUALCOMM US 9,900
- HALLIBURTON ENERGY SERVICES GROUP US 9,742
- PHILIPS ELECTRONICS NL 7,249
- MITSUBISHI ELECTRIC CORPORATION JP 6,503
- ZHEJIANG UNIVERSITY 6,414
- DENSO CORPORATION JP 6,382