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Expired European patentEurope

Method for redistribution of trichlorosilane

EP 0774467 B1 · Applicant: NORTH DAKOTA STATE UNIVERSITY RESEARCH FOUNDATION

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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 October 28, 1996 and granted April 17, 2002. A European patent lasts at most 20 years from filing, so its term ended October 28, 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 April 28, 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.
FiledOctober 28, 1996
PublishedMay 21, 1997
GrantedApril 17, 2002
Term endedOctober 28, 2016
Application numberEP 96307783
Classification (CPC)C07F7/14 +2 more

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedOct 28, 1996PublishedMay 21, 1997Patent grantedApril 17, 2002Term endedOct 28, 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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