CPC Subgroup
B41L 11/14 Constructional features of masters (chemical aspects B41M)
Full Title
Apparatus for directly duplicating from hectographic masters in mirror image, i.e. "wet duplicators" for producing positive copies > Constructional features of masters (chemical aspects B41M)
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