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Expired European patentEurope

Monolithic optocoupler

EP 0318883 B1 · Applicant: ASEA BROWN BOVERI AB

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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 November 26, 1988 and granted March 25, 1992. A European patent lasts at most 20 years from filing, so its term ended November 26, 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 May 26, 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.
FiledNovember 26, 1988
PublishedJune 7, 1989
GrantedMarch 25, 1992
Term endedNovember 26, 2008
Application numberEP 88119766
Classification (CPC)G02B6/4295 +2 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedNov 26, 1988PublishedJune 7, 1989Patent grantedMarch 25, 1992Term endedNov 26, 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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