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Expired European patentEurope

Liquid developer for development of electrostatic images

EP 0114419 B1 · Applicant: AGFA-GEVAERT naamloze vennootschap

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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 January 20, 1983 and granted May 6, 1987. A European patent lasts at most 20 years from filing, so its term ended January 20, 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 July 20, 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.
FiledJanuary 20, 1983
PublishedAugust 1, 1984
GrantedMay 6, 1987
Term endedJanuary 20, 2003
Application numberEP 83200085
Classification (CPC)G03G9/122 +2 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedJan 20, 1983PublishedAug 1, 1984Patent grantedMay 6, 1987Term endedJan 20, 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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