Skip to content
Search Classifications
Search for IPC and CPC classification codes or keywords
CPC Main Group
G03G 13/00

Electrographic processes using a charge pattern (G03G15/00, G03G16/00, G03G17/00 take precedence)

12 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

  • G03G 13/05 Imagewise charging, i.e. laying-down a charge in the configuration of an original image using a modulated stream of charged particles, e.g. of corona ions, modulated by a photoconductive control screen bearing a charge pattern or by optically activated charging means
  • G03G 13/054 using X-rays, e.g. electroradiography
  • G03G 13/056 using internal polarisation
  • G03G 13/20 Fixing, e.g. by using heat
  • G03G 13/34 Editing, i.e. producing a composite image by copying one or more original images or parts thereof

Top Applicants

Top 10 applicants by patent filingsfor 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