Positive electrode active material and non-aqueous electrolyte cell
CA 2344903 C · Owner: Li, Guohua · Inventors: Li, Guohua; Yamada, Atsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A positive electrode active material and a non-aqueous electrolyte cell which uses the positive electrode active material. The cell has a high discharge voltage , without lowering the capacity and superior charging/discharging characteristics. To , this end, the positive electrode active material contains a compound represented by the , general formula Li x Mn y Fe1-y PO4 wherein 0 <x<= 2 and 0.5 <y< 0.95, or a compound represented by the general formula Li x Mn y A1-y PO4 where 0 < x <= 2 , and 0 < y < 1 and , wherein A is a metal element selected from among Ti Zn, Mg and Co or plural , metal , elements selected from among Ti Fe, Zn, Mg and Co.
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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 April 23, 2001 and granted March 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 23, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2023.
- 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
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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.