B41M 5/42 Intermediate, , or covering layers
Introduced: January 2006
Title
Titles differ between systems:
IPC: Intermediate or covering layers
CPC: Intermediate, , or covering layers
Full Title
Full titles differ between systems:
Duplicating or marking methods; Sheet materials for use therein > Thermography > characterised by the base, intermediate or covering layers; Heat, radiation filtering or absorbing means or layers; combined with layers or compositions suitable for other methods of image registration; Special originals for reproduction by thermography > Intermediate or covering layers
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); > characterised by the base , intermediate, or covering layers, ; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography > Intermediate, , or covering layers
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
IPC defines codes here since 2006.
Child Classifications
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- B41M 5/44 characterised by the macromolecular compounds since 2006 +2 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B41,2013–2023, worldwide · Source: EPO PATSTAT
- SEIKO EPSON CORPORATION 14,672
- CANON 14,153
- RICOH COMPANY 8,049
- SEIKO EPSON CORPORATION JP 8,044
- HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,312
- BROTHER INDUSTRIES 6,887
- KYOCERA DOCUMENT SOLUTIONS 5,463
- CANON JP 5,001
- KONICA MINOLTA CORPORATION 4,512
- BROTHER INDUSTRIES JP 3,681
Top Applicants (CPC)
Class B41,2013–2023, worldwide · Source: EPO PATSTAT
- SEIKO EPSON CORPORATION 8,446
- SEIKO EPSON CORPORATION JP 8,438
- HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,828
- CANON JP 5,419
- CANON 4,156
- BROTHER INDUSTRIES JP 3,763
- BROTHER INDUSTRIES 2,779
- RICOH COMPANY JP 2,717
- FUJIFILM JP 2,423
- RICOH COMPANY 1,739