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Expired Canadian patentCanada

Enhanced charge retention electrochemical hydrogen storage alloys and an enhanced charge retention electrochemical cell

CA 1297318 C · Owner: Reichman, Benjamin · Inventors: Reichman, Benjamin; Fetcenko, Michael A.; Venkatesan, Srini

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Abstract From the Canadian patent

A high charge retention reversible, multicomponent, multiphase electrochemical hydrogen storage alloy comprising titanium, vanadium, zirconium, nickel, and chromium. The hydrogen storage alloy is capable of electrochemically charging and discharging hydrogen in alkaline aqueous media. In one preferred exemplification the hydrogen storage alloy comprises (Ti2-xZrxV4-yNiy)1-zCrz, where 0.0 is less than x is less than 1.5 0.6 is less than y, is less than 3.5, and z is an effective amount less than 0.20. Also disclosed is a rechargeable electrochemical cell, utilizing a negative electrode formed of the alloy.

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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

  • Granted March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 27, 1987
GrantedMarch 17, 1992
Term endedMarch 17, 2009
Patent numberCA 1297318 C
Classification (IPC)H01M4/38 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedNov 27, 1987Patent grantedMarch 17, 1992Term endedMarch 17, 2009

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.