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PCE
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CPC Subgroup
B41J 29/64

by a function of the printer to lock the keyboard

Full Title

Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for > Locking devices applied to printing mechanisms > and automatically actuated > by a function of the printer to lock the keyboard

1 direct subcode

Child Classifications

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  • B41J 29/66 Locking devices actuated when platen reaches the end of a line

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