Zinc electrode for alkaline storage battery
CA 2100282 A1 · Owner: Suga, Masanobu · Inventors: Akita, Seiichi; Kuroda, Nobuyuki; Suga, Masanobu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A negative zinc electrode for an alkaline storage battery capable of suppressing the occurrence of dendrite and shape change is provided. The negative zinc electrode comprises an electrode using zinc as an active material and a polymer layer formed substantially in direct contact with the electrode, the polymer layer comprising a polymer having an oxygen permeability constant of not less than 1 x 10-10 cm3 (STP) cm-1s-1cmHg-1.
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 July 12, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 12, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 2015.
- 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.