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Expired Canadian patentCanada

Display composition technique

CA 2241689 C · Owner: Lucent Technologies Inc. · Inventors: Ensor, James Robert

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A mix of computer graphics and video is employed to display images and more, particularly, the ratio of computer graphics to video is adjusted as a function of the available processing and transport capacity. The function for adjusting the ratio of computer graphics to video may also be dependent on the motion of the viewer's viewpoint.

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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 June 25, 1998 and granted February 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 25, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 2020.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 25, 1998
GrantedFebruary 12, 2002
Term endedJune 25, 2018
Patent numberCA 2241689 C
Classification (IPC)H04N7/08 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedJune 25, 1998Patent grantedFeb 12, 2002Term endedJune 25, 2018

Sources & verification

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