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Expired European patentEurope

Catalyst composition and a process for the preparation therewith of hydrocarbons from synthesis gas

EP 0251358 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 May 18, 1987 and granted October 23, 1991. A European patent lasts at most 20 years from filing, so its term ended May 18, 2007.
  • 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 November 18, 2012.
  • 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.
FiledMay 18, 1987
PublishedJanuary 7, 1988
GrantedOctober 23, 1991
Term endedMay 18, 2007
Application numberEP 87200922
Classification (CPC)B01J29/87 +2 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedMay 18, 1987PublishedJan 7, 1988Patent grantedOct 23, 1991Term endedMay 18, 2007

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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