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Expired European patentEurope

Improved hochwald construction of unitary matrix codebooks via eigen coordinate transformations

EP 1844589 B1 · Applicant: Nokia Corporation

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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 January 5, 2006 and granted July 17, 2013. A European patent lasts at most 20 years from filing, so its term ended January 5, 2026.
  • 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.
FiledJanuary 5, 2006
PublishedOctober 17, 2007
GrantedJuly 17, 2013
Term endedJanuary 5, 2026
Application numberEP 06700366
Classification (CPC)H04B7/0417 +2 more

Timeline

Timeline From EPO dates

2007200920112013201520172019202120232025Application filedJan 5, 2006PublishedOct 17, 2007Patent grantedJuly 17, 2013Term endedJan 5, 2026

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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