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Expired Canadian patentCanada

Apparatus and method for alterable resource partitioning enforcement in a data processing system having central processing units using different operating systems

CA 1321035 C · Owner: Bull Hn Information Systems Inc. · Inventors: Curley, John L.; Wurz, David A.; Hirsch, Thomas S.

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Abstract From the Canadian patent

In a data processing system having a plurality of non-homogeneous central processing units apparatus is disclosed that permits a central processing unit not having mechanisms for protection of the allocation of resources to be coupled to the data processing system while preserving a peer relationship among the central processing units. The protection apparatus is interposed between the coupled central processing unit and the system bus and reviews each access to data processing system resources to insure that the accessed system resource is available to the associated data processing system. In addition, the apparatus permits initialization procedures without interprocessor conflict, …

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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

  • Granted August 3, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 3, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 20, 1988
GrantedAugust 3, 1993
Term endedAugust 3, 2010
Patent numberCA 1321035 C
Classification (IPC)G06F15/16 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 20, 1988Patent grantedAug 3, 1993Term endedAug 3, 2010

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