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DIFF Subgroup
B41F 7/24

Damping devices

Introduced: September 1968

Full Title

Rotary lithographic machines > Details > Damping devices

IPC and CPC are identically structured here. All 9 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • B41F 7/28 using brushes IPC+CPC Available in IPC and CPC
  • B41F 7/30 using spraying elements IPC+CPC Available in IPC and CPC
  • B41F 7/32 Ducts, containers, or like supply devices for liquids IPC+CPC Available in IPC and CPC
  • B41F 7/34 Endless bands IPC+CPC Available in IPC and CPC
  • B41F 7/36 Inking-rollers serving also to apply ink repellants IPC+CPC Available in IPC and CPC
  • B41F 7/37 with supercooling for condensation of air moisture since 1995 IPC+CPC Available in IPC and CPC
  • B41F 7/38 Absorbent pads IPC+CPC Available in IPC and CPC
  • B41F 7/40 Devices for tripping or lifting damping rollers; Supporting, adjusting, or removing arrangements therefor (such arrangements or devices for inking rollers B41F31/30) 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