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DIFF Main Group
B41J 21/00

Column, tabular or like printing arrangements; Means for centralising short lines (carriage-release mechanisms B41J19/66)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Column, tabular or like printing arrangements; Means for centralising short lines

CPC: Column, tabular or like printing arrangements; Means for centralising short lines (carriage-release mechanisms B41J19/66)

Full Title

Full titles differ between systems:

IPC:

Column, tabular or like printing arrangements; Means for centralising short lines

CPC:

Column, tabular or like printing arrangements; Means for centralising short lines (carriage-release mechanisms B41J19/66)

Additional Content IPC

Carriage-release mechanisms

IPC and CPC are identically structured here. All 10 subcodes exist in both systems.

Child Classifications

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  • B41J 21/02 Stops or stop-racks IPC+CPC Available in IPC and CPC
  • B41J 21/04 Mechanisms for setting or restoring tabulation stops IPC+CPC Available in IPC and CPC
  • B41J 21/06 with means for preventing rebound from stops IPC+CPC Available in IPC and CPC
  • B41J 21/08 Mechanisms for initiating, effecting, skipping, or stopping tabulation movement; Means for centralising short lines IPC+CPC Available in IPC and CPC
  • B41J 21/10 with central, counter, or equivalent stop projected into path of tabulation stops IPC+CPC Available in IPC and CPC
  • B41J 21/12 characterised by arrangements of electrical contacts IPC+CPC Available in IPC and CPC
  • B41J 21/14 characterised by denominational arrangements IPC+CPC Available in IPC and CPC
  • B41J 21/16 controlled by the sensing of marks or formations on the paper being typed, an undersheet, or the platen IPC+CPC Available in IPC and CPC
  • B41J 21/17 controlled by stored information since 1990 IPC+CPC Available in IPC and CPC
  • B41J 21/18 characterised by applications of scales or indicators IPC+CPC Available in 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