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A method of forming dual thickness gate oxide in a semiconductor device

EP 1049159 A2 · Applicant: LUCENT TECHNOLOGIES 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 April 20, 2000 and never granted as a European patent. Had it been granted, its 20-year term would have ended April 20, 2020.
  • 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 October 20, 2025.
  • 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.
FiledApril 20, 2000
PublishedNovember 2, 2000
GrantedNever granted
Term endedApril 20, 2020
Application numberEP 00303351
Classification (CPC)H10D84/0144 +1 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedApril 20, 2000PublishedNov 2, 2000Term endedApril 20, 2020

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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