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Expired European patentEurope

Method and apparatus for generating and recognizing authenticity of command signals

EP 0771094 B1 · Applicant: 4TECH Gesellschaft für Technologie- und Know-how-Transfer GmbH

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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 October 24, 1996 and granted August 24, 2005. A European patent lasts at most 20 years from filing, so its term ended October 24, 2016.
  • 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 April 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.
FiledOctober 24, 1996
PublishedMay 2, 1997
GrantedAugust 24, 2005
Term endedOctober 24, 2016
Application numberEP 96250243
Classification (CPC)H04L9/32

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedOct 24, 1996PublishedMay 2, 1997Patent grantedAug 24, 2005Term endedOct 24, 2016

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

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