Positive electrode material for lithium secondary battery, method for producing the same, and lithium secondary battery
CA 2452102 C · Owner: Kawatetsu Mining Co. Ltd. · Inventors: Konnai, Hidefumi; Hamano, Yoshiaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A positive electrode material for a lithium secondary battery which is high in safety, high in capacity excellent in cycle performance, and high in charge/discharge efficiency is provided. The positive electrode material for a lithium secondary battery is a powder containing a Li-Ni-Co-O or Li-Ni-Co-Ba-O system component as a main component and having an amorphous phase of an oxide mixed in each of particles or formed at the surface of the particle.
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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 4, 2003 and granted February 26, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2025.
- 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.