IPC Subgroup
G01R 33/2 involving magnetic resonance
Introduced: January 1985
Last revised: January 2006
Full Title
Arrangements or instruments for measuring magnetic variables > involving magnetic resonance
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
Related Keywords
COMPUTER(S) tomographsNUCLEAR magnetic resonancenuclear magnetic RESONANCE
6 direct subcodes
Child Classifications
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- G01R 33/24 for measuring direction or magnitude of magnetic fields or magnetic flux
- G01R 33/28 Details of apparatus provided for in groups
- G01R 33/44 using nuclear magnetic resonance [NMR]
- G01R 33/6 using electron paramagnetic resonance
- G01R 33/62 using double resonance
- G01R 33/64 using cyclotron resonance
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