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Expired European patentEurope

Person location system

EP 0556575 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.

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Why it's free to use

  • Filed January 20, 1993 and granted September 30, 1998. A European patent lasts at most 20 years from filing, so its term ended January 20, 2013.
  • 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 July 20, 2018.
  • 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.
FiledJanuary 20, 1993
PublishedAugust 25, 1993
GrantedSeptember 30, 1998
Term endedJanuary 20, 2013
Application numberEP 93100799
Classification (CPC)G08B26/007 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedJan 20, 1993PublishedAug 25, 1993Patent grantedSep 30, 1998Term endedJan 20, 2013

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.