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Expired European patentEurope

Preparation of fluoroaromatic compounds in dispersion of potassium fluoride

EP 0253836 B1 · Applicant: Mallinckrodt, Inc. (a Delaware corporation)

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Overview

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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 December 30, 1986 and granted October 3, 1990. A European patent lasts at most 20 years from filing, so its term ended December 30, 2006.
  • 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 June 30, 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.
FiledDecember 30, 1986
PublishedJanuary 27, 1988
GrantedOctober 3, 1990
Term endedDecember 30, 2006
Application numberEP 87900615
Classification (CPC)C07C253/30 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedDec 30, 1986PublishedJan 27, 1988Patent grantedOct 3, 1990Term endedDec 30, 2006

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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