CPC Main Group
B41J 31/00 Ink ribbons; Renovating or testing ink ribbons
6 direct subcodes
Child Classifications
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- B41J 31/02 Ink ribbons characterised by the material from which they are woven
- B41J 31/05 Ink ribbons having coatings other than impression-material coatings
- B41J 31/09 Ink ribbons characterised by areas carrying media for obliteration or removal of typing errors
- B41J 31/10 Ink ribbons having arrangements to facilitate threading through a machine
- B41J 31/12 Ink ribbons having arrangements to prevent undesired contact between the impression-transfer material and machine parts or other articles
- B41J 31/14 Renovating or testing ink ribbons
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