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Expired European patentEurope

Catalyst and process for the treatment of exhaust gases from internal-combustion engines

EP 0170588 B1 · Applicant: SOCIETE FRANCAISE DES PRODUITS POUR CATALYSE PRO-CATALYSE

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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 19, 1985 and granted June 29, 1988. A European patent lasts at most 20 years from filing, so its term ended July 19, 2005.
  • 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 19, 2011.
  • 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 19, 1985
PublishedFebruary 5, 1986
GrantedJune 29, 1988
Term endedJuly 19, 2005
Application numberEP 85401489
Classification (CPC)B01J23/894 +2 more

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedJuly 19, 1985PublishedFeb 5, 1986Patent grantedJune 29, 1988Term endedJuly 19, 2005

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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