Polymeric solid electrolytes and production process thereof
CA 2004351 C · Owner: Kobayashi, Hiroshi · Inventors: Kobayashi, Hiroshi; Matsuura, Kazuo; Kuroda, Nobuyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polymeric solid electrolytes are formed by the present invention, namely, by incorporating a low molecular weight polyethylene glycol, a high molecular weight polyethylene oxide and an alkali metal or ammonium salt in a specific cinnamate ester compound fol-, lowed by a polymerization and crosslinking. The polymeric solid electrolytes have high ionic conductivity, high strength as a film, and good adhesion with electrodes. Therefore, they can be applied widely as ionics materials, e.g. for the total solidification of lithium batteries and plastic batteries and high capacity condensers and as electrolytes for electrochromic displays.
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 1, 1989 and granted November 2, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 1, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 1, 2011.
- 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.