CPC Main Group
B41B 23/00 Auxiliary devices for modifying, mixing or correcting text or layout in connection with photographic or photoelectronic composing
Filing statistics
CPC B41B 23/00 belongs to the parent subclass B41B, which recorded 45 patent applications worldwide between 2013 and 2023. Annual filings grew from 2 in 2013 to 3 in 2022 (+50%), peaking at 16 applications in 2017. The most active applicants in class B41 are SEIKO EPSON CORPORATION (8,446 applications), SEIKO EPSON CORPORATION (8,438 applications) and HEWLETT-PACKARD DEVELOPMENT COMPANY (7,828 applications).
Source: EPO PATSTAT, worldwide filings
3 direct subcodes
Child Classifications
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- B41B 23/02 for mixing by line-by-line projection of parts of texts from a number of films on to another
- B41B 23/04 for facilitating hand correction of texts
- B41B 23/06 for correcting texts by removing incorrect lines from one film and splicing-in corrected lines from another film
Top Applicants
Top 10 applicants by patent filingsfor 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