using a reversing-feeler responsive to the tension of the ribbon

Introduced: September 1968

Full Title

Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material > Ribbon-feed devices or mechanisms > with arrangements for reversing the feed direction > automatically > and characterised by the use of particular reversing control means > using a reversing-feeler responsive to the tension of the ribbon

No child classifications to compare. This is a leaf node in both 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