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Expired European patentEurope

Process for preparing a noble metal-containing zeolite catalyst

EP 0306237 B1 · Applicant: MOBIL OIL CORPORATION

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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 August 26, 1988 and granted November 25, 1992. A European patent lasts at most 20 years from filing, so its term ended August 26, 2008.
  • 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 February 26, 2014.
  • 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.
FiledAugust 26, 1988
PublishedMarch 8, 1989
GrantedNovember 25, 1992
Term endedAugust 26, 2008
Application numberEP 88307949
Classification (CPC)C10G45/64 +1 more

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

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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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