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Expired European patentEurope

Cap layers and/or passivation layers for nitride-based transistors, transistor structures and methods of fabricating same

EP 1817798 B1 · Applicant: Cree, Inc.

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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 August 31, 2005 and granted August 1, 2012. A European patent lasts at most 20 years from filing, so its term ended August 31, 2025.
  • 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.
FiledAugust 31, 2005
PublishedAugust 15, 2007
GrantedAugust 1, 2012
Term endedAugust 31, 2025
Application numberEP 05797731
Classification (CPC)H10D30/015 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedAug 31, 2005PublishedAug 15, 2007Patent grantedAug 1, 2012Term endedAug 31, 2025

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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