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DIFF Subgroup
G01R 1/20

Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Details of instruments or arrangements of the types covered by groups or > Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments

CPC:

Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00 (constructional details particular to arrangements for measuring the electric consumption G01R11/02) > Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments

Of 4 combined children, 2 exist in both systems.

2 codes are CPC-only extensions.

Child Classifications

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  • G01R 1/203 CPC only CPC only
  • G01R 1/206 CPC only CPC only
  • G01R 1/22 Tong testers acting as secondary windings of current transformers IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class G01,2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 41,447
  2. CHINESE ACADEMY OF SCIENCES 32,952
  3. ROBERT BOSCH DE 16,470
  4. SAMSUNG ELECTRONICS COMPANY KR 10,052
  5. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 9,573
  6. ZHEJIANG UNIVERSITY 9,529
  7. GUANGDONG POWER GRID CORPORATION 8,615
  8. TSINGHUA UNIVERSITY 7,805
  9. HALLIBURTON ENERGY SERVICES GROUP US 7,796
  10. QUALCOMM US 7,171

Top Applicants (CPC)

Class G01,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 21,460
  2. ROBERT BOSCH DE 17,801
  3. SGCC(STATE GRID CORPORATION OF CHINA) 17,347
  4. SAMSUNG ELECTRONICS COMPANY KR 13,192
  5. QUALCOMM US 9,900
  6. HALLIBURTON ENERGY SERVICES GROUP US 9,742
  7. PHILIPS ELECTRONICS NL 7,249
  8. MITSUBISHI ELECTRIC CORPORATION JP 6,503
  9. ZHEJIANG UNIVERSITY 6,414
  10. DENSO CORPORATION JP 6,382