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Expired European patentEurope

Buffer structure for heteroepitaxy on a silicon substrate

EP 1595280 B1 · Applicant: QinetiQ Limited

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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 16, 2004 and granted December 27, 2006. A European patent lasts at most 20 years from filing, so its term ended February 16, 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.
FiledFebruary 16, 2004
PublishedNovember 16, 2005
GrantedDecember 27, 2006
Term endedFebruary 16, 2024
Application numberEP 04711402
Classification (CPC)H10P14/2905 +2 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedFeb 16, 2004PublishedNov 16, 2005Patent grantedDec 27, 2006Term endedFeb 16, 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

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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