Battery using a metal particle bed electrode
CA 2068207 A1 · Owner: Evans, James W. · Inventors: Savaskan, Gultekin; Evans, James W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A zinc-air battery (10) in a case (12) including a zinc particle bed (27) supported the current feeder (22) and diaphragm (26) on a porous support plate which holds the particles but passes electrolyte solution. Electrolyte is recycled through conduit between the support plate and top of the bed by convective forces created by a density differential caused by a higher concentration of high density discharge products in the interstices of the bed than in the electrolyte recycle conduit.
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 November 6, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 2012.
- 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.