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DIFF Subgroup
B41M 5/26

Thermography (B41M5/20, B41M5/24 take precedence);

Introduced: September 1968

Title

Titles differ between systems:

IPC: Thermography

CPC: Thermography (B41M5/20, B41M5/24 take precedence);

Full Title

Full titles differ between systems:

IPC:

Duplicating or marking methods; Sheet materials for use therein > Thermography

CPC:

Duplicating or marking methods; Sheet materials for use therein (by using light-sensitive materials G03; electrography, magnetography G03G ) > Thermography (B41M5/20, B41M5/24 take precedence);

Of 10 combined children, 7 exist in both systems.

3 codes are CPC-only extensions.

5 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1990.

Child Classifications

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  • B41M 5/262 CPC only CPC only
  • B41M 5/265 CPC only CPC only
  • B41M 5/267 CPC only CPC only
  • B41M 5/398 Processes based on the production of stickiness patterns using powders since 2006 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