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Expired European patentEurope

Formulation chamber with exterior electrotransport delivery device

EP 0361688 B1 · Applicant: ALZA 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 August 30, 1989 and granted April 28, 1993. A European patent lasts at most 20 years from filing, so its term ended August 30, 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 March 2, 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.
FiledAugust 30, 1989
PublishedApril 4, 1990
GrantedApril 28, 1993
Term endedAugust 30, 2009
Application numberEP 89308764
Classification (CPC)A61M5/1407

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedAug 30, 1989PublishedApril 4, 1990Patent grantedApril 28, 1993Term endedAug 30, 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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