Gel electrolyte and gel electrolyte battery
CA 2298809 C · Owner: Shibuya, Mashio · Inventors: Shibuya, Mashio; Goto, Shuji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gel electrolyte comprised of a non-aqueous electrolytic solution immersed in a matrix polymer, in which. ion conductivity of a solvent is improved and superior , cyclic characteristics are achieved. To this end the gel electrolyte includes , an , electrolyte a matrix polymer and a non-aqueous solvent. The non-aqueous solvent is , a mixed solvent of ethylene carbonate (EC) propylene carbonate (PC) and , .gamma.--butyrolactone (GBL). The non-aqueous solvent is of a weight composition in an area , in a triangular phase diagram (EC PC, GBL) surrounded by a point (70, 30 0), a point , (55, 15, 30), a point (15 55, 30) and a point (30, 70, 0). A gel electrolyte battery , employing this …
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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 February 16, 2000 and granted February 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 16, 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.