IPC Subgroup
B41J 29/58 and automatically actuated
Introduced: September 1968
Last revised: January 2006
Full Title
Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for > Locking devices applied to printing mechanisms > and automatically actuated
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- Subclass:
- TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
5 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- B41J 29/6 in response to failure of power supply
- B41J 29/62 by the absence of paper to lock hammer mechanism
- B41J 29/64 by a function of the printer to lock the keyboard
- B41J 29/68 by completion of a page or predetermined number of lines or exhaustion of paper to lock the keyboard
- B41J 29/7 Interlocks between any two carriage-moving mechanisms, e.g. character-space, back-space, tabulation, carriage-return, or carriage-release mechanisms
Top Applicants
Top 10 applicants by patent filingsfor 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