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IPC Subgroup
G03G 5/02

Charge-receiving layers

Introduced: September 1968

Last revised: January 2006

Full Title

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

Classification Context

Section:
PHYSICS
Class:
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
Subclass:
ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

5 direct subcodes

Child Classifications

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  • G03G 5/022 Layers for surface-deformation imaging, e.g. frost imaging
  • G03G 5/024 Photoelectret layers
  • 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
  • G03G 5/028 Layers in which after being exposed to heat patterns electrically conductive patterns are formed in the layers, e.g. for thermoxerography

Top Applicants

Top 10 applicants by patent filingsfor 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