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Expired Canadian patentCanada

Image synthesis

CA 2249016 C · Owner: Breen, Andrew Paul · Inventors: Breen, Andrew Paul; Bowers, Emma Jane

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

Synthesis of a moving picture of a face (e.g. to accompany synthetic speech) is performed by converting an input phoneme string into a sequence of mouth shapes or visemes. Specifically a shape is generated for each vowel and for each transition involving a consonant.

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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 March 24, 1997 and granted December 3, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 24, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 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.
FiledMarch 24, 1997
GrantedDecember 3, 2002
Term endedMarch 24, 2017
Patent numberCA 2249016 C
Classification (IPC)G10L13/00 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedMarch 24, 1997Patent grantedDec 3, 2002Term endedMarch 24, 2017

Sources & verification

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