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European application, no grantEurope

Synchronizing asynchronous protocol interactions between peer layers in different nodes of a layered communication network

EP 0504087 A2 · Applicant: International Business Machines 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 February 11, 1992 and never granted as a European patent. Had it been granted, its 20-year term would have ended February 11, 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 August 11, 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.
FiledFebruary 11, 1992
PublishedSeptember 16, 1992
GrantedNever granted
Term endedFebruary 11, 2012
Application numberEP 92480024
Classification (CPC)H04L9/40

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedFeb 11, 1992PublishedSep 16, 1992Term endedFeb 11, 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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