Alkali/transition metal halo-and hydroxy-phosphates and related electrode active materials
CA 2746409 C · Owner: Valence Technology, Inc. · Inventors: Saidi, M. Yazid; Swoyer, Jeffrey; Barker, Jeremy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrode active material comprising a compound of the formula A a M b(XY4)c Z d wherein (a) A is selected from the group consisting of Li Na, K, and mixtures thereof, and 0< a< 8; (b) M comprises one or more metals comprising at least one metal which is capable of undergoing oxidation to a higher valence state and 1< b< 3; (c) XY4 is selected from the group consisting of X'O4-x Y'x X'O4.y Y'2y X"S4, and mixtures thereof, where X' is P As, Sb, Si, Ge, S, or mixtures thereof; X" is P As, Sb, Si, Ge or mixtures thereof; Y' is halogen; 0<= x < 3; and 0< y < 4; and 0< c<= 3; (d) Z is OH Cl, Br, or mixtures thereof, and 0< d<= 6; and wherein M X, Y, Z, a, b, c, d, x and y are selected so as …
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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 October 18, 2002 and granted April 29, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 18, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.