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Expired European patentEurope

Use of pyrrolidone derivatives as anti-amnestic agents

EP 0288685 B1 · Applicant: KIRIN BEER KABUSHIKI KAISHA

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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 February 27, 1988 and granted May 26, 1993. A European patent lasts at most 20 years from filing, so its term ended February 27, 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 August 27, 2013.
  • 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.
FiledFebruary 27, 1988
PublishedNovember 2, 1988
GrantedMay 26, 1993
Term endedFebruary 27, 2008
Application numberEP 88102956
Classification (CPC)A61K31/635 +2 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedFeb 27, 1988PublishedNov 2, 1988Patent grantedMay 26, 1993Term endedFeb 27, 2008

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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