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Expired European patentEurope

Purification of saturated halocarbons

EP 0370688 B1 · Applicant: E.I. DU PONT DE NEMOURS AND COMPANY

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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 November 15, 1989 and granted July 13, 1994. A European patent lasts at most 20 years from filing, so its term ended November 15, 2009.
  • 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 May 15, 2015.
  • 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.
FiledNovember 15, 1989
PublishedMay 30, 1990
GrantedJuly 13, 1994
Term endedNovember 15, 2009
Application numberEP 89311839
Classification (CPC)C07C17/38 +1 more

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedNov 15, 1989PublishedMay 30, 1990Patent grantedJuly 13, 1994Term endedNov 15, 2009

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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