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European application, no grantEurope

Step-index optical fiber for transmission of high-capacity laser radiation

EP 0393322 A2 · Applicant: Schott Glaswerke

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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 17, 1990 and never granted as a European patent. Had it been granted, its 20-year term would have ended February 17, 2010.
  • 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 17, 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.
FiledFebruary 17, 1990
PublishedOctober 24, 1990
GrantedNever granted
Term endedFebruary 17, 2010
Application numberEP 90103077
Classification (CPC)G02B6/0365

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedFeb 17, 1990PublishedOct 24, 1990Term endedFeb 17, 2010

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.