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Expired Canadian patentCanada

Method of and apparatus for determining if a given data point falls within a population of data points

CA 2066520 C · Owner: Ferro Corporation · Inventors: Keswani, Santosh Tirthdas; Bemis, Peter Francis; Kolste, Steven John

CIPO record

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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 method of and apparatus for determining if a given data point having three parameters falls within a population defined by more than four known data points each data point, having the three parameters the method and apparatus involving, determining if the given data point falls within any of a plurality of tetrahedrans, each of the tetrahedrons having faux vertices, each of the vertices of each tetrahedron being defined by one of the known data points.

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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 April 21, 1992 and granted April 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 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.
FiledApril 21, 1992
GrantedApril 10, 2001
Term endedApril 21, 2012
Patent numberCA 2066520 C
Classification (IPC)G06F7/02 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedApril 21, 1992Patent grantedApril 10, 2001Term endedApril 21, 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.