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Expired European patentEurope

Receiver feedback and broadcast signaling using busy bursts

EP 1855422 B1 · Applicant: NTT DoCoMo, 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 May 12, 2006 and granted December 2, 2009. A European patent lasts at most 20 years from filing, so its term ended May 12, 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.
FiledMay 12, 2006
PublishedNovember 14, 2007
GrantedDecember 2, 2009
Term endedMay 12, 2026
Application numberEP 06009846
Classification (CPC)H04W72/20

Timeline

Timeline From EPO dates

2007200920112013201520172019202120232025Application filedMay 12, 2006PublishedNov 14, 2007Patent grantedDec 2, 2009Term endedMay 12, 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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