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Expired European patentEurope

Thick film dielectric compositions for use on aluminium nitride substrates

EP 1505040 B1 · Applicant: E.I. du Pont de Nemours and Company

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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 June 25, 2004 and granted July 29, 2009. A European patent lasts at most 20 years from filing, so its term ended June 25, 2024.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledJune 25, 2004
PublishedFebruary 9, 2005
GrantedJuly 29, 2009
Term endedJune 25, 2024
Application numberEP 04014968
Classification (CPC)C03C8/14 +2 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedJune 25, 2004PublishedFeb 9, 2005Patent grantedJuly 29, 2009Term endedJune 25, 2024

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

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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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