IPC Subgroup
G01R 11/19 Compensating for errors caused by disturbing torque, e.g. rotating-field errors of polyphase meters
Introduced: July 1974
Last revised: January 2006
Full Title
Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption > Constructional details > Compensating for errors; Adjusting or regulating means therefor > Compensating for errors caused by disturbing torque, e.g. rotating-field errors of polyphase meters
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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