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Expired Canadian patentCanada

Fault-tolerant java virtual machine

CA 2294654 C · Owner: Holiday, Matthew R. · Inventors: Holiday, Matthew R.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A method for providing a first JVM with support for fault tolerance by using information maintained by the first JVM to checkpoint objects that are created modified, and/or deleted during the process of responding to an event of a transaction. The checkpointed objects are sent to and stored in a second JVM such that the second JVM is fully capable of continuing the processing of the transaction in the event of the failure of the first JVM.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed January 7, 2000 and granted November 4, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 7, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 7, 2000
GrantedNovember 4, 2003
Term endedJanuary 7, 2020
Patent numberCA 2294654 C
Classification (IPC)G06F9/44 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedJan 7, 2000Patent grantedNov 4, 2003Term endedJan 7, 2020

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.