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DIFF Subgroup
G01N 1/28

Preparing specimens for investigation (mounting specimens on microscopic slides G02B21/34; means for supporting the objects or the materials to be analysed in electron microscopes H01J37/20 )

Introduced: September 1968

Title

Titles differ between systems:

IPC: Preparing specimens for investigation

CPC: Preparing specimens for investigation (mounting specimens on microscopic slides G02B21/34; means for supporting the objects or the materials to be analysed in electron microscopes H01J37/20 )

Full Title

Full titles differ between systems:

IPC:

Sampling; Preparing specimens for investigation > Preparing specimens for investigation

CPC:

Sampling; Preparing specimens for investigation > Preparing specimens for investigation (mounting specimens on microscopic slides G02B21/34; means for supporting the objects or the materials to be analysed in electron microscopes H01J37/20 )

Of 13 combined children, 8 exist in both systems.

5 codes are CPC-only extensions.

Child Classifications

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  • G01N 1/2806 CPC only CPC only
  • G01N 1/2853 CPC only CPC only
  • G01N 1/32 Polishing; Etching IPC+CPC Available in IPC and CPC
  • G01N 1/34 Purifying; Cleaning IPC+CPC Available in IPC and CPC
  • G01N 1/42 Low-temperature sample treatment, e.g. cryofixation since 1995 IPC+CPC Available in IPC and CPC
  • G01N 1/44 Sample treatment involving radiation, e.g. heat since 1995 IPC+CPC Available in IPC and CPC
  • G01N 2001/2893 2nd only CPC only CPC only

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