Lithium ion batteries with improved resistance to sustained self-heating
CA 2368436 A1 · Owner: Turner, Robert L. · Inventors: Turner, Robert L.; Christensen, Leif
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lithium ion battery that includes: (a) a cathode; (b) an anode in the form of a thin film which, when lithiated, does not exhibit sustained self-heating at temperatures up to about 100 ~C; and (c) an electrolyte separating the anode and the cathode. The anode may comprise an electrochemically active elemental metal such as Al, Si, Sn, Sb Pb, Ge, Mg, Zn, Cd, Bi and In or a , mixture thereof. The battery has a capacity of at least 600 milliamp-hours a , specific energy of at least 100 watt-hours/kg and a volumetric energy of at , least 250 watt-hours/liter.
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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 15, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 15, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2022.
- 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.