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CPC Main Group
B41J 31/00

Ink ribbons; Renovating or testing ink ribbons

6 direct subcodes

Child Classifications

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  • 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

Top Applicants

Top 10 applicants by patent filingsfor class B41, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SEIKO EPSON CORPORATION 8,446
  2. SEIKO EPSON CORPORATION JP 8,438
  3. HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,828
  4. CANON JP 5,419
  5. CANON 4,156
  6. BROTHER INDUSTRIES JP 3,763
  7. BROTHER INDUSTRIES 2,779
  8. RICOH COMPANY JP 2,717
  9. FUJIFILM JP 2,423
  10. RICOH COMPANY 1,739