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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

Filing statistics

CPC B41L 3/12 belongs to the parent subclass B41L, which recorded 534 patent applications worldwide between 2013 and 2023. Annual filings declined from 54 in 2013 to 20 in 2023 (-63%), peaking at 86 applications in 2017. The most active applicants in class B41 are SEIKO EPSON CORPORATION (8,446 applications), SEIKO EPSON CORPORATION (8,438 applications) and HEWLETT-PACKARD DEVELOPMENT COMPANY (7,828 applications).

Source: EPO PATSTAT, worldwide filings

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