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CPC Main Group
B41N 3/00

Preparing for use and conserving printing surfaces

6 direct subcodes

Child Classifications

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  • B41N 3/04 Graining or abrasion by mechanical means (chemical graining B41N3/03)
  • B41N 3/06 by use of detergents
  • B41N 3/08 Damping; Neutralising or similar differentiation treatments for lithographic printing formes;

Top Applicants

Top 10 applicants by patent filingsfor class B41, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SEIKO EPSON CORPORATION 8,446
  2. SEIKO EPSON CORPORATION JP 8,438
  3. HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,828
  4. CANON JP 5,419
  5. CANON 4,156
  6. BROTHER INDUSTRIES JP 3,763
  7. BROTHER INDUSTRIES 2,779
  8. RICOH COMPANY JP 2,717
  9. FUJIFILM JP 2,423
  10. RICOH COMPANY 1,739