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Expired European patentEurope

Automatic eye refractive power measuring apparatus

EP 0189350 B1 · Applicant: Kabushiki Kaisha TOPCON

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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 January 21, 1986 and granted April 6, 1994. A European patent lasts at most 20 years from filing, so its term ended January 21, 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 July 21, 2011.
  • 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.
FiledJanuary 21, 1986
PublishedJuly 30, 1986
GrantedApril 6, 1994
Term endedJanuary 21, 2006
Application numberEP 86400116
Classification (CPC)A61B3/103

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedJan 21, 1986PublishedJuly 30, 1986Patent grantedApril 6, 1994Term endedJan 21, 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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.