Method for producing spinel type lithium manganese complex oxide
CA 2266251 C · Owner: Murata Manufacturing Co. Ltd. · Inventors: Yamashita, Yasuhisa; Hattori, Koji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for producing a spinet type lithium manganese complex oxide comprises the steps of: synthesizing a spinet type lithium manganese complex oxide represented by a general formula of Li(Mn2-x Li x)O4 (wherein x is defined by the relation of 0 ~ x ~ 0.08) by a spray pyrolysis method; and subjecting the oxide to a heat treatment at a temperature of T°C (T is defined by the relation of T ~ 865 - 2027x wherein x corresponds to that in the general formula Li(Mn2-x Li x)O4).
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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 March 23, 1999 and granted May 27, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 23, 2021.
- 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.