Lithium metal oxide electrodes for lithium cells and batteries
CA 2527207 C · Owner: Whitfield, Pamela · Inventors: Whitfield, Pamela; Davidson, Isobel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lithium metal oxide positive electrode for a non-aqueous lithium cell or battery is disclosed. The positive electrode comprises a lithium metal oxide having a layered structure and a general formula after in-situ or ex-situ , oxidation, of Li x Mn y M1-yO2 wherein 0<= x <= 0.20 0 < y < 1, manganese is in , the 4+ oxidation state and M is one or more the first row transition metals: Ti, V, Cr, Mn, Fe, Co, Ni or Cu, or other specific other cations: Al Mg, Mo, W, Ta, Si, Sn, Zr, Be, Ca, Ga, and P which have an appropriate ionic radii to be inserted in to the structure without unduly disrupting it. Usage of the materials , of the invention in lithium cells and batteries is disclosed. A …
Read the whole patent
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 May 27, 2004 and granted January 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 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.
Timeline
Timeline From CIPO dates
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.