IPC Main Group
G01R 17/00 Measuring arrangements involving comparison with a reference value, e.g. bridge
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
Related Keywords
BRIDGE(S) for electric measurementsPOTENTIOMETERS used for electric measurements
3 direct subcodes
Child Classifications
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- G01R 17/02 Arrangements in which the value to be measured is automatically compared with a reference value
- G01R 17/1 AC or DC measuring bridges
- G01R 17/2 AC or DC potentiometric measuring arrangements
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