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DIFF Subgroup
G03G 5/02

Charge-receiving layers (G03G5/153 takes precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Charge-receiving layers

CPC: Charge-receiving layers (G03G5/153 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Recording-members for original recording by exposure, e.g. to light, to heat or to electrons; Manufacture thereof; Selection of materials therefor > Charge-receiving layers

CPC:

Recording-members for original recording by exposure, e.g. to light, to heat or to electrons; Manufacture thereof; Selection of materials therefor > Charge-receiving layers (G03G5/153 takes precedence)

Of 6 combined children, 5 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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  • G03G 5/022 Layers for surface-deformation imaging, e.g. frost imaging since 1974 IPC+CPC Available in IPC and CPC
  • G03G 5/024 Photoelectret layers since 1974 IPC+CPC Available in IPC and CPC
  • G03G 5/026 Layers in which during the irradiation a chemical reaction occurs whereby electrically conductive patterns are formed in the layers, e.g. for chemixerography since 1974 IPC+CPC Available in IPC and CPC
  • G03G 5/028 Layers in which after being exposed to heat patterns electrically conductive patterns are formed in the layers, e.g. for thermoxerography since 1974 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class G03,2013–2023, worldwide · Source: EPO PATSTAT

  1. CANON 31,416
  2. CANON JP 17,469
  3. KYOCERA DOCUMENT SOLUTIONS 9,845
  4. RICOH COMPANY 9,807
  5. ASML NETHERLANDS NL 9,427
  6. FUJIFILM JP 7,225
  7. KONICA MINOLTA CORPORATION 7,216
  8. FUJI XEROX COMPANY 5,711
  9. CARL ZEISS SMT DE 4,971
  10. RICOH COMPANY JP 4,123

Top Applicants (CPC)

Class G03,2013–2023, worldwide · Source: EPO PATSTAT

  1. CANON JP 19,215
  2. CANON 12,916
  3. ASML NETHERLANDS NL 10,000
  4. FUJIFILM JP 7,814
  5. SAMSUNG ELECTRONICS COMPANY KR 5,181
  6. CARL ZEISS SMT DE 5,079
  7. RICOH COMPANY JP 4,343
  8. LG INNOTEK COMPANY KR 4,054
  9. KYOCERA DOCUMENT SOLUTIONS 3,812
  10. KYOCERA DOCUMENT SOLUTIONS JP 3,682