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DIFF Main Group
G01D 15/00

Component parts of recorders for measuring arrangements not specially adapted for a specific variable

Introduced: September 1968

Of 12 combined children, 11 exist in both systems.

1 codes are CPC-only extensions.

5 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • G01D 15/005 CPC only CPC only
  • G01D 15/10 Heated recording elements acting on heatsensitive layers IPC+CPC Available in IPC and CPC
  • G01D 15/12 Magnetic recording elements IPC+CPC Available in IPC and CPC
  • G01D 15/14 Optical recording elements; Recording elements using X-or nuclear radiation IPC+CPC Available in IPC and CPC
  • G01D 15/20 Recording elements for printing with ink or for printing by deformation or perforation of the recording surface, e.g. embossing IPC+CPC Available in IPC and CPC
  • G01D 15/22 Chopper bars for bringing recording element into contact with recording surface 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