Electrochemical hydrogen storage alloys for nickel metal hydride batteries
CA 2215666 C · Owner: Reichman, Benjamin · Inventors: Reichman, Benjamin; Chao, Benjamin S.; Ovshinsky, Stanford R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disordered electrochemical hydrogen storage alloy comprising: (Base Alloy)a Co b Mn c Fe d Sn e where the Base Alloy comprises 0.1 to 60 atomic percent Ti, 0.1 to 40 atomic percent Zr 0 to 60 atomic percent , V, 0.1 to 57 atomic percent Ni and 0 to 56 atomic percent, Cr; b is 0 to 7.5 atomic percent; c is 13 to 17 atomic percent; d is 0 to 3.5 atomic percent; e is 0 to 1.5 atomic percent; and a + b + c + d + e = 100 atomic percent.
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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 April 4, 1996 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 4, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 2018.
- 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.