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Expired Canadian patentCanada

Search engine for video and graphics

CA 2796218 C · Owner: Gemstar Development Corporation · Inventors: Yuen, Henry C.

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 searching for graphic or video files having corresponding locators used to locate such graphic or video files using a computer includes creating an identifier of searchable file information from identifier information related to a graphic or video file. The method further includes storing the identifier and the locator for the graphic or video file in a database receiving search criteria, searching the identifiers in the database and sending or displaying the results of the search.

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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 November 30, 1999 and granted November 29, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 30, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 2021.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 30, 1999
GrantedNovember 29, 2016
Term endedNovember 30, 2019
Patent numberCA 2796218 C
Classification (IPC)H04N21/47

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedNov 30, 1999Patent grantedNov 29, 2016Term endedNov 30, 2019

Sources & verification

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