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Expired Canadian patentCanada

Application distributed execution apparatus and method

CA 2071451 C · Owner: Lien, Yeong-Chang · Inventors: Lien, Yeong-Chang; Fin, Tong-Haing

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Abstract From the Canadian patent

To enable sharing of a screen, window or application by a plurality of processors connected through ISDN or the like API calls to the operating system in a master processor during execution, are transferred to slave processors by an event redirection mechanism. The API calls are then provided to the operating systems of the slave processors by their event redirection mechanisms, and the same screen or window appears at both the master processor and slave processors. Messages generated at the slave processors are likewise provided to the message queue of the master processor by the event, and then provided to the application of the master processor. Therefore the slave processors share the …

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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 June 17, 1992 and granted October 27, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 17, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 17, 1992
GrantedOctober 27, 1998
Term endedJune 17, 2012
Patent numberCA 2071451 C
Classification (IPC)G06F13/38 +1 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedJune 17, 1992Patent grantedOct 27, 1998Term endedJune 17, 2012

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