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Expired European patentEurope

Method of manufacturing a silicon-containing charge-transporting material

EP 0771807 B1 · Applicant: DOW CORNING ASIA, Ltd.

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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 November 6, 1996 and granted February 27, 2002. A European patent lasts at most 20 years from filing, so its term ended November 6, 2016.
  • 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 May 6, 2022.
  • 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.
FiledNovember 6, 1996
PublishedMay 7, 1997
GrantedFebruary 27, 2002
Term endedNovember 6, 2016
Application numberEP 96117734
Classification (CPC)G03G5/078 +2 more

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedNov 6, 1996PublishedMay 7, 1997Patent grantedFeb 27, 2002Term endedNov 6, 2016

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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