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DIFF Main Group
B41J 29/00

Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for

Introduced: September 1968

IPC and CPC are identically structured here. All 21 subcodes exist in both systems.

4 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • B41J 29/04 Means for attaching machines to baseboards IPC+CPC Available in IPC and CPC
  • B41J 29/06 Special supports, platforms or trolleys for supporting machines on tables IPC+CPC Available in IPC and CPC
  • B41J 29/08 Sound-deadening, or shock-absorbing stands, supports, cases or pads separate from machines IPC+CPC Available in IPC and CPC
  • B41J 29/10 Sound-deadening devices embodied in machines IPC+CPC Available in IPC and CPC
  • B41J 29/14 Attachments operated by the leg, e.g. the foot, the knee IPC+CPC Available in IPC and CPC
  • B41J 29/15 Script supports connected to the typewriter or printer since 1990 IPC+CPC Available in IPC and CPC
  • B41J 29/16 Auxiliary receptacles for articles, e.g. erasers, pencils IPC+CPC Available in IPC and CPC
  • B41J 29/17 Cleaning arrangements since 1990 IPC+CPC Available in IPC and CPC
  • B41J 29/377 Cooling or ventilating arrangements since 1990 IPC+CPC Available in IPC and CPC
  • B41J 29/40 Means for printing fixed, i.e. unchanging, matter in addition to selectable matter IPC+CPC Available in IPC and CPC
  • B41J 29/50 Side-stop mechanisms IPC+CPC Available in IPC and CPC
  • B41J 29/52 Top-and-bottom stop mechanisms 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