Rechargeable nickel electrode containing electrochemical cell and method
CA 2037898 C · Owner: Catotti, Arthur J. · Inventors: Puglisi, Vincent J.; Frye, Douglas B.; Catotti, Arthur J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sealed rechargeable nickel electrode containing electrochemical cell has a pasted negative electrode having paste layers adhered to a nonforaminous conductive substrate (40) which, retards growth (swelling) of the nickel electrode on cycling. In particular in a sealed rechargeable electrochemical cell having a nickel positive electrode, a pasted negative counter electrode comprised of an electrically conductive substrate and an electrochemically active material secured through adhesion to at least one face of the substrate, a separator interposed between the positive and negative electrodes, and an electrolyte the, improvement comprising the combination: the nickel positive electrode …
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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 July 13, 1990 and granted May 24, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 13, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 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.