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DIFF Subgroup
B41K 3/66

Safety devices, e.g. for preventing extraction of copy matter before completion of stamping operation

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Apparatus for stamping articles having integral means for supporting the articles to be stamped > Details or accessories > Safety devices, e.g. for preventing extraction of copy matter before completion of stamping operation

CPC:

Apparatus for stamping articles having integral means for supporting the articles to be stamped (means for printing on articles of special shape or having a surface of particular configuration B41F17/00) > Details or accessories > Safety devices, e.g. for preventing extraction of copy matter before completion of stamping operation

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

Class B41,2013–2023, worldwide · Source: EPO PATSTAT

  1. SEIKO EPSON CORPORATION 14,672
  2. CANON 14,153
  3. RICOH COMPANY 8,049
  4. SEIKO EPSON CORPORATION JP 8,044
  5. HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,312
  6. BROTHER INDUSTRIES 6,887
  7. KYOCERA DOCUMENT SOLUTIONS 5,463
  8. CANON JP 5,001
  9. KONICA MINOLTA CORPORATION 4,512
  10. BROTHER INDUSTRIES JP 3,681

Top Applicants (CPC)

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