Improvements in or relating to electrochemical cells
CA 2452702 C · Owner: Bruce, Peter George · Inventors: Robertson, Alastair Douglas; Bruce, Peter George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a manganese oxide material wherein the material comprises a , host material QqMnyMzOx where Q and M are each any element, y is any number greater than zero, and q and z are each any number greater than or equal to zero, and at least one dopant substituted into the host material the , manganese oxide material having a layered structure in which the ions are arranged in a series of generally planar layers or sheets, stacked one on top , of another. In a particularly preferred material Q is Li and M is either Co Ni, Al, or Li. Particularly preferred combinations of M and a dopant are Ni,Co; Al,Co; Li,Cu; Li,Al; and Li,Zn. A method of preparing the material is also …
Read the whole patent
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 June 26, 2002 and granted August 27, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 26, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 2024.
- 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.