IPC Subgroup
B41J 19/18 Character-spacing or back-spacing mechanisms; Carriage-return or release devices therefor
Introduced: September 1968
Last revised: January 2006
Full Title
Character- or line-spacing mechanisms > Character-spacing or back-spacing mechanisms; Carriage-return or release devices therefor
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
6 direct subcodes
Child Classifications
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- B41J 19/2 Positive-feed character-spacing mechanisms
- B41J 19/34 Escapement-feed character-spacing mechanisms
- B41J 19/6 Auxiliary feed or adjustment devices
- B41J 19/66 Carriage-release mechanisms
- B41J 19/68 Carriage-return mechanisms, e.g. manually actuated
- B41J 19/74 with special means to maintain character-spacing or back-spacing elements in engagement during case-shift or like movement
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