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Expired European patentEurope

Decoder circuit which resists a fluctuation of a power supply

EP 0664614 B1 · Applicant: NEC CORPORATION

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Overview

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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 December 20, 1994 and granted August 26, 1998. A European patent lasts at most 20 years from filing, so its term ended December 20, 2014.
  • 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 June 20, 2020.
  • 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.
FiledDecember 20, 1994
PublishedJuly 26, 1995
GrantedAugust 26, 1998
Term endedDecember 20, 2014
Application numberEP 94120201
Classification (CPC)H03K19/01728 +2 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedDec 20, 1994PublishedJuly 26, 1995Patent grantedAug 26, 1998Term endedDec 20, 2014

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