DIFF Subgroup
B41F 3/18 of special construction or for particular purposes
Introduced: September 1968
Full Title
Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed > of special construction or for particular purposes
IPC and CPC are identically structured here. All 8 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B41F 3/26 with type-beds and impression cylinders simultaneously movable relative to one another IPC+CPC Available in IPC and CPC
- B41F 3/28 Proof-print presses for relief printing, lithography or intaglio printing, i.e. presses for checking accuracy of printing surfaces IPC+CPC Available in IPC and CPC
- B41F 3/36 for intaglio or heliogravure printing (proof-print presses B41F3/28) IPC+CPC Available in IPC and CPC
- B41F 3/40 for perfecting sheets, i.e. for printing on both sides thereof IPC+CPC Available in IPC and CPC
- B41F 3/44 for monocolour or multicolour printing on one side of webs, or for perfecting webs, i.e. monocolour or multicolour printing on both sides of webs 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