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Expired European patentEurope

Process for the carbonylation of acetylenically unsaturated compounds

EP 0689529 B1 · Applicant: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.

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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 March 18, 1994 and granted February 18, 1998. A European patent lasts at most 20 years from filing, so its term ended March 18, 2014.
  • 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 September 18, 2019.
  • 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.
FiledMarch 18, 1994
PublishedJanuary 3, 1996
GrantedFebruary 18, 1998
Term endedMarch 18, 2014
Application numberEP 94912497
Classification (CPC)C07C67/38 +1 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedMarch 18, 1994PublishedJan 3, 1996Patent grantedFeb 18, 1998Term endedMarch 18, 2014

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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