Solid battery
CA 2255277 C · Owner: Dai-Ichi Kogyo Seiyaku Co. Ltd. · Inventors: Ishiko, Eriko; Sada, Tsutomu; Kono, Michiyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solid battery consisting of a positive electrode a, negative electrode and a separator disposed between the positive electrode and negative electrode wherein at least one of the positive electrode, the negative electrode and the separator comprises a solid electrolyte obtained by dissolving a tetrafunctional polymer compound and an electrolyte salt in a solvent and crosslinking the solution by the irradiation of an actinic radiation and/or by heating, which solid electrolyte comprises a tetrafunctional terminal acryloyl-modified alkylene oxide polymer having a polymer chain represented by following formula (I) as the tetrafunctional polymer compound and, the solvent at a ratio of from 220 …
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 December 3, 1998 and granted September 2, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 3, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 3, 2020.
- 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.