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Expired European patentEurope

Forward link carrier recovery in an ocdma spread spectrum communication system without a pilot tone

EP 0878077 B1 · Applicant: Alcatel USA Sourcing, L.P.

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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 March 24, 1997 and granted May 4, 2005. A European patent lasts at most 20 years from filing, so its term ended March 24, 2017.
  • 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 September 24, 2022.
  • 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.
FiledMarch 24, 1997
PublishedNovember 18, 1998
GrantedMay 4, 2005
Term endedMarch 24, 2017
Application numberEP 97916811
Classification (CPC)H04B1/707

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedMarch 24, 1997PublishedNov 18, 1998Patent grantedMay 4, 2005Term endedMarch 24, 2017

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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