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Expired European patentEurope

Ink tank in a cartridge of an ink jet recording apparatus

EP 0466142 B1 · Applicant: CANON KABUSHIKI KAISHA

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Overview

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed July 10, 1991 and granted April 17, 1996. A European patent lasts at most 20 years from filing, so its term ended July 10, 2011.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by January 10, 2017.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledJuly 10, 1991
PublishedJanuary 15, 1992
GrantedApril 17, 1996
Term endedJuly 10, 2011
Application numberEP 91111516
Classification (CPC)B41J2/17513

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedJuly 10, 1991PublishedJan 15, 1992Patent grantedApril 17, 1996Term endedJuly 10, 2011

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.