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Expired Canadian patentCanada

Floating point encoding systems and methods

CA 2544656 C · Owner: Blackberry Limited · Inventors: Yach, David P.; Dahms, John F. A.

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Abstract From the Canadian patent

Systems and methods for encoding floating point numbers. A system can include encoding logic which encodes invalid floating point representations as valid data. , Decoding logic can be used to recognize the invalid floating point representations and map , can provide the invalid floating point representations to valid data values. The decoding , logic then can provide the valid data values so that operations on the valid data values can , be performed in accordance with instructions received from an associated program.

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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 September 7, 2005 and granted March 22, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 7, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 7, 2005
GrantedMarch 22, 2016
Term endedSeptember 7, 2025
Patent numberCA 2544656 C
Classification (IPC)H03M7/24 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedSep 7, 2005Patent grantedMarch 22, 2016Term endedSep 7, 2025

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