Cathode additive for alkaline primary cells
CA 2203046 A1 · Owner: Puin, Wolfgang · Inventors: Puin, Wolfgang; Jose, Horst-Udo; Klaus, Christoph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to alkaline primary cells comprising a zinc gel as the anode material an, aqueous alkaline electrolyte, a separator and a cathode material containing manganese dioxide wherein, the cathode material comprises 0.1-5% by weight of alkali metal titanates and/or alkaline earth metal titanates.
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 April 18, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 18, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 2019.
- 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.