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Expired Canadian patentCanada

Scientific visualization system

CA 2060975 C · Owner: Ramanujam, Gopalan · Inventors: Ramanujam, Gopalan

CIPO record

Overview

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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 3D scientific visualization system for viewing models composed of polyhedra or other elements having vertices at which analysis results (e.g. temperature or pressure) are defined. The model is viewed either in a cutting plane or as a contour surface in which a given result assumes a specified value. Polygons making up an intersection surface formed by the intersection of the cutting plane or contour surface with the polyhedra forming the model are generated and passed to a polygon processor for rendering and display on a raster-scan device. A series of intersection surfaces are generated for display by varying either the position of the cutting plane along its normal or the value that 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 February 11, 1992 and granted November 10, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 11, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 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.
FiledFebruary 11, 1992
GrantedNovember 10, 1998
Term endedFebruary 11, 2012
Patent numberCA 2060975 C
Classification (IPC)G06T17/00

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedFeb 11, 1992Patent grantedNov 10, 1998Term endedFeb 11, 2012

Sources & verification

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