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Expired Canadian patentCanada

Processing of shape data of a dental prosthesis

CA 2519979 C · Owner: Burger, Bernd · Inventors: Hertlein, Guenter; Hauptmann, Holger; Hoescheler, Stefan

CIPO record

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Abstract From the Canadian patent

The invention relates to the processing of data regarding the three dimensional shape of a dental prosthesis which has two prosthesis sections , and a connector section said connector section being connected to the two prosthesis sections and less stable than the two prosthesis sections comprising the steps that : - a stability parameter and a stability criterion are determined for the connector section ; - for the stability parameter the , actual value is calculated from the data ; - it is checked for the connector section as to whether the actual value fulfills the stability criterion and , if not, that a warning signal is generated wherein the determination of the , stability …

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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 25, 2004 and granted March 8, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 25, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 25, 2026.
  • 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 25, 2004
GrantedMarch 8, 2016
Term endedMarch 25, 2024
Patent numberCA 2519979 C
Classification (IPC)A61C13/00

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMarch 25, 2004Patent grantedMarch 8, 2016Term endedMarch 25, 2024

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