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Expired Canadian patentCanada

System and method of local data alignment for stack memory

CA 2211515 C · Owner: Ibm Canada Limited - Ibm Canada Limitee · Inventors: Stoodley, Kevin Alexander; Keenleyside, John Dawson

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

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Abstract From the Canadian patent

A system and method for aligning data in stack memory in a data processing system where the stack memory provides temporary storage for storing parameters for a function call. The method first determines if any of the parameters in the function being call are of a selected type. If a parameter is of a selected type, code is generated for aligning the parameter on a stricter boundary than the default boundary for the stack memory. Code is then generated to align the remaining parameters in the function call on the default boundary in the stack memory. The aligned parameter in the stack provides a reference point which is used by the called function to align locally scoped variables in 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 July 25, 1997 and granted December 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 25, 1997
GrantedDecember 11, 2001
Term endedJuly 25, 2017
Patent numberCA 2211515 C
Classification (IPC)G06F9/45 +1 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedJuly 25, 1997Patent grantedDec 11, 2001Term endedJuly 25, 2017

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