CPC Main Group
G01R 25/00 Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
5 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- G01R 25/02 in circuits having distributed constants
- G01R 25/04 involving adjustment of a phase shifter to produce a predetermined phase difference, e.g. zero difference
- G01R 25/06 employing quotient instrument
- G01R 25/08 by counting of standard pulses
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