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Expired European patentEurope

Base station capable of monitoring occurrence of interference on every transmission

EP 0244872 B1 · Applicant: NEC CORPORATION

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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.

Why it's free to use

  • Filed May 8, 1987 and granted October 13, 1993. A European patent lasts at most 20 years from filing, so its term ended May 8, 2007.
  • 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 November 8, 2012.
  • 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 8, 1987
PublishedNovember 11, 1987
GrantedOctober 13, 1993
Term endedMay 8, 2007
Application numberEP 87106709
Classification (CPC)H04W36/06 +2 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedMay 8, 1987PublishedNov 11, 1987Patent grantedOct 13, 1993Term endedMay 8, 2007

Sources & verification