Method of making a nickel hydroxide material
CA 2422046 C · Owner: Benet, Gabriel E. · Inventors: Zallen, Avram; Fierro, Cristian; Walker, Charles T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for making a positive battery electrode material using a secondary metal. The secondary metal is preferably treated using a non-electrolytic process and formed into an active, positive battery electrode material by a precipitation reaction. Also disclosed herein is a process for making a nickel hydroxide material without the necessity of a preamine reactor. The process includes the steps of providing a metal and forming the metal into an active positive electrode material. The process for making a nickel hydroxide material may also include one or more blending steps. The step for forming may include concurrently combining the metal with ammonium ions and hydroxide ions. …
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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 September 13, 2001 and granted November 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 13, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 13, 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
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.