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Expired European patentEurope

method of implementing use of electronic cash

EP 0518365 B1 · Applicant: NIPPON TELEGRAPH AND TELEPHONE 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.

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Why it's free to use

  • Filed June 12, 1992 and granted May 22, 1996. A European patent lasts at most 20 years from filing, so its term ended June 12, 2012.
  • 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 December 12, 2017.
  • 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.
FiledJune 12, 1992
PublishedDecember 16, 1992
GrantedMay 22, 1996
Term endedJune 12, 2012
Application numberEP 92109934
Classification (CPC)G06Q20/29 +2 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedJune 12, 1992PublishedDec 16, 1992Patent grantedMay 22, 1996Term endedJune 12, 2012

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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