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Glass ceramic dielectric compositions

EP 0253342 A1 · Applicant: E.I. DU PONT DE NEMOURS AND COMPANY

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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 July 11, 1987 and never granted as a European patent. Had it been granted, its 20-year term would have ended July 11, 2007.
  • 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 January 11, 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.
FiledJuly 11, 1987
PublishedJanuary 20, 1988
GrantedNever granted
Term endedJuly 11, 2007
Application numberEP 87110059
Classification (CPC)H01B3/12 +2 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedJuly 11, 1987PublishedJan 20, 1988Term endedJuly 11, 2007

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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