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PCE
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DIFF Subgroup
B41L 3/12

Auxiliary devices

Introduced: September 1968

Full Title

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

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

Child Classifications

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

Top Applicants

Top Applicants (IPC)

Class B41,2013–2023, worldwide · Source: EPO PATSTAT

  1. SEIKO EPSON CORPORATION 14,672
  2. CANON 14,153
  3. RICOH COMPANY 8,049
  4. SEIKO EPSON CORPORATION JP 8,044
  5. HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,312
  6. BROTHER INDUSTRIES 6,887
  7. KYOCERA DOCUMENT SOLUTIONS 5,463
  8. CANON JP 5,001
  9. KONICA MINOLTA CORPORATION 4,512
  10. BROTHER INDUSTRIES JP 3,681

Top Applicants (CPC)

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