Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks

Introduced: January 1995

Full Title

Full titles differ between systems:

IPC:

Details of measuring arrangements of the types provided for in groups , or > Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks

CPC:

Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00 > Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks

Of 9 combined children, 6 exist in both systems.

3 codes are CPC-only extensions.

IPC defines codes here since 1995.

Child Classifications

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G01R 15/142 CPC only CPC only
G01R 15/144 CPC only CPC only
G01R 15/146 +1 CPC CPC only CPC only
G01R 15/16 using capacitive devices since 1995 +1 CPC IPC+CPC Available in IPC and CPC
G01R 15/18 using inductive devices, e.g. transformers since 1995 +4 CPC IPC+CPC Available in IPC and CPC
G01R 15/20 using galvano-magnetic devices, e.g. Hall-effect devices since 1995 +3 CPC IPC+CPC Available in IPC and CPC
G01R 15/22 using light-emitting devices, e.g. LED, optocouplers since 1995 IPC+CPC Available in IPC and CPC
G01R 15/24 using light-modulating devices since 1995 +4 CPC IPC+CPC Available in IPC and CPC
G01R 15/26 using modulation of waves other than light, e.g. radio or acoustic waves since 1995 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

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