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Expired Canadian patentCanada

Process for preparing electroactive insertion compounds and electrode materials obtained therefrom

CA 2790784 C · Owner: Phostech Lithium Inc. · Inventors: Gauthier, Michel; Gauthier, Laurent; Lavoie, Donald

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Abstract From the Canadian patent

The present invention relates to a lithium-ion reversible electrode material said , material having a particle size distribution comprising micron size particles and submicron size , particles, said micron size particles and submicron size particles having the nominal formula , AB(XO4)D in which: A is lithium or is lithium that is partially substituted with another alkali metal , representing less than 20% at. of said A; B is a main redox metal at oxidation level of +2 selected , from the group consisting of Fe Mn, Ni and any mixture thereof, or is a main redox metal at , oxidation level of +2 selected from the group consisting of Fe Mn, Ni, and , any mixtures thereof that is …

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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 December 22, 2004 and granted February 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 22, 2024.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 22, 2004
GrantedFebruary 12, 2013
Term endedDecember 22, 2024
Patent numberCA 2790784 C
Classification (IPC)H01M4/58 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedDec 22, 2004Patent grantedFeb 12, 2013Term endedDec 22, 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.