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CPC Subgroup
B41L 3/12

Auxiliary devices

Full Title

Platens or like sheet supports for manifolding using pressure-sensitive layers or intermediaries, e.g. for book-keeping purposes > Auxiliary devices

5 direct subcodes

Child Classifications

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  • B41L 3/14 Magazines or storage compartments, e.g. for slips
  • B41L 3/16 Web-feeding arrangements
  • B41L 3/18 Displaceable covers, e.g. with windows
  • B41L 3/20 for facilitating manifolding in books
  • B41L 3/22 Applications of ink ribbons; Holding, feeding, or guiding means therefor

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