IPC Main Group
G01R 22/00 Arrangements for measuring time integral of electric power or current, e.g. electricity meters
Introduced: January 1985
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
Additional Content
Monitoring electric consumption of electrically-propelled vehicles
Related Keywords
measuring time integral of electric POWER
3 direct subcodes
Child Classifications
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- G01R 22/02 by electrolytic methods
- G01R 22/04 by calorimetric methods
- G01R 22/06 by electronic methods
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