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Expired European patentEurope

A process kit and an image forming apparatus using the same

EP 0467418 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 May 19, 1983 and granted January 4, 1995. A European patent lasts at most 20 years from filing, so its term ended May 19, 2003.
  • 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 November 19, 2008.
  • 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.
FiledMay 19, 1983
PublishedJanuary 22, 1992
GrantedJanuary 4, 1995
Term endedMay 19, 2003
Application numberEP 91116049
Classification (CPC)G03G21/1671 +2 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedMay 19, 1983PublishedJan 22, 1992Patent grantedJan 4, 1995Term endedMay 19, 2003

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

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