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Expired European patentEurope

Electrophotographic imaging apparatus and method

EP 0093839 B1 · Applicant: Coulter Systems Corporation

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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 February 16, 1983 and granted August 27, 1986. A European patent lasts at most 20 years from filing, so its term ended February 16, 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 August 16, 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.
FiledFebruary 16, 1983
PublishedNovember 16, 1983
GrantedAugust 27, 1986
Term endedFebruary 16, 2003
Application numberEP 83101485
Classification (CPC)G03G15/0163

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedFeb 16, 1983PublishedNov 16, 1983Patent grantedAug 27, 1986Term endedFeb 16, 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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