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 29/06 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 29/14 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 29/18 Mechanisms for rendering the print visible to the operator IPC+CPC Available in IPC and CPC
- B41J 29/26 Devices, non-fluid media or methods for cancelling, correcting errors, underscoring or ruling IPC+CPC Available in IPC and CPC
- B41J 29/38 Drives, motors, controls or automatic cut-off devices for the entire printing mechanism 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 29/42 Scales and indicators, e.g. for determining side margins IPC+CPC Available in IPC and CPC
- B41J 29/46 Applications of alarms, e.g. responsive to approach of end of line IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B41,2013–2023, worldwide · Source: EPO PATSTAT
- SEIKO EPSON CORPORATION 14,672
- CANON 14,153
- RICOH COMPANY 8,049
- SEIKO EPSON CORPORATION JP 8,044
- HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,312
- BROTHER INDUSTRIES 6,887
- KYOCERA DOCUMENT SOLUTIONS 5,463
- CANON JP 5,001
- KONICA MINOLTA CORPORATION 4,512
- BROTHER INDUSTRIES JP 3,681
Top Applicants (CPC)
Class B41,2013–2023, worldwide · Source: EPO PATSTAT
- SEIKO EPSON CORPORATION 8,446
- SEIKO EPSON CORPORATION JP 8,438
- HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,828
- CANON JP 5,419
- CANON 4,156
- BROTHER INDUSTRIES JP 3,763
- BROTHER INDUSTRIES 2,779
- RICOH COMPANY JP 2,717
- FUJIFILM JP 2,423
- RICOH COMPANY 1,739