Solid electrolyte
CA 2080047 C · Owner: Dai-Ichi Kogyo Seiyaku Co. Ltd. · Inventors: Motogami, Kenji; Mori, Shigeo; Kono, Michiyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solid electrolyte is prepared by dissolving a solvent and an electrolyte salt in a trifunctional polymer and cross-linking it by irradiation with active radiation and/or heating. The trifunctional polymer is a trifunctional terminal acryloyl-modified alkylene oxide polymer containing a polymer chain expressed by the following general formula (I) as each functional chain; (see fig. I), wherein R' represents a lower alkyl group R" represents hydrogen or a methyl, group and m and n are each independently 0 or an integer of at least 1 and m + n ~ 35, and the amount of the solvent is 220 to 950% (weight) with respect to the trifunctional terminal acryloyl-modified alkylene oxide polymer.
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 7, 1992 and granted March 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 2014.
- 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.