Method for the preparation of gamma-liv2o5.
CA 2584227 C · Owner: Guyomard, Dominique · Inventors: Deschamps, Marc; Dubarry, Matthieu; Morel, Benoit
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the preparation of a .gamma.-LiV2O5 optionally carbon material. The method consists in preparing a composition consisting of carbon and Li and V precursors and in subjecting it to thermal treatment. The composition is prepared by bringing carbon V2O5-.alpha. and a Li precursor into contact the quantities thereof being such that the ratio of concentrations V2O5/Li is 0.95 1.05 carbon exceeding by at least 25 % in relation to the stoichiometry. Thermal treatment is carried out in two stages: a first stage at a temperature of 90 °C -150 °C during 1 -12 hours; a second stage at a temperature of 420 °C - 500 °C during 10 mins - 1 hour, in a nitrogen or argon atmosphere …
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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, 2005 and granted February 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 18, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.