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Expired European patentEurope

Fluorescent intracellular calcium indicators

EP 0342891 B1 · Applicant: SMITHKLINE BEECHAM 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 May 15, 1989 and granted March 9, 1994. A European patent lasts at most 20 years from filing, so its term ended May 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 November 15, 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.
FiledMay 15, 1989
PublishedNovember 23, 1989
GrantedMarch 9, 1994
Term endedMay 15, 2009
Application numberEP 89304872
Classification (CPC)C07D417/06 +2 more

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedMay 15, 1989PublishedNov 23, 1989Patent grantedMarch 9, 1994Term endedMay 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

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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