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Expired European patentEurope

Process for the separation of alpha-olefins by destillation from an effluent comprising ethylene and butene-1

EP 0755907 B1 · Applicant: INSTITUT FRANCAIS DU PETROLE

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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 July 15, 1996 and granted December 1, 1999. A European patent lasts at most 20 years from filing, so its term ended July 15, 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 January 15, 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.
FiledJuly 15, 1996
PublishedJanuary 29, 1997
GrantedDecember 1, 1999
Term endedJuly 15, 2016
Application numberEP 96401561
Classification (CPC)C07C7/05

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedJuly 15, 1996PublishedJan 29, 1997Patent grantedDec 1, 1999Term endedJuly 15, 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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