Battery including carbon foam current collectors
CA 2489953 C · Owner: County Of Peoria · Inventors: Votoupal, John J.; Kelley, Kurtis C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A battery having a current collector constructed of carbon foam. The carbon foam includes , a network of pores into which a chemically active paste is disposed to create either a , positive or negative plate for the battery. The carbon foam resists corrosion and exhibits a , large amount of surface area. The invention includes a method for making the disclosed , carbon foam current collector used in the battery.
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 May 22, 2003 and granted April 30, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 2025.
- 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.