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Expired European patentEurope

Receiver for discrete multitone modulated signals having window function

EP 1043875 B1 · Applicant: NEC USA, 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 November 17, 1999 and granted July 28, 2004. A European patent lasts at most 20 years from filing, so its term ended November 17, 2019.
  • 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 May 17, 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.
FiledNovember 17, 1999
PublishedOctober 11, 2000
GrantedJuly 28, 2004
Term endedNovember 17, 2019
Application numberEP 99122054
Classification (CPC)H04L27/2647

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedNov 17, 1999PublishedOct 11, 2000Patent grantedJuly 28, 2004Term endedNov 17, 2019

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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