DIFF Subgroup
B41F 31/02 Ducts, containers, supply or metering devices
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Inking arrangements or devices > Ducts, containers, supply or metering devices
CPC:
Inking arrangements or devices (inking units for platen presses B41F1/40; inking units for cylinder presses B41F3/81) > Ducts, containers, supply or metering devices
Of 10 combined children, 7 exist in both systems.
3 codes are CPC-only extensions.
3 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B41F 31/06 Troughs or like reservoirs with immersed or partly immersed, rollers or cylinders IPC+CPC Available in IPC and CPC
- B41F 31/10 Applications of feed or duct rollers (messenger or moving transfer rollers B41F31/14) IPC+CPC Available in IPC and CPC
- B41F 31/14 Applications of messenger or other moving transfer rollers 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