Negative electrode for a rechargeable lithium battery
CA 2214186 C · Owner: Jacobs, James K. · Inventors: Dasgupta, Sankar; Jacobs, James K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Solid solution of titanium dioxide and tin dioxide is utilized as the anode active substance in the negative electrode of a rechargeable lithium battery. The lithium battery comprised of a negative electrode containing particles of titanium dioxide-tin dioxide solid solution a non-aqueous lithium ion bearing electrolyte and a positive electrode usually made of a lithium containing chalcogenide compound provides stable voltage has high reversible anode capacity and high energy density.
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 October 14, 1997 and granted February 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 14, 2019.
- 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.