Electrochemical process and apparatus for reducing oxidants of vehicle interior air
CA 2050260 C · Owner: Kummer, Joseph Talbot · Inventors: Kummer, Joseph Talbot
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A porous or nonporous hydrophilic, insoluble electrolyte allows a reducing condition to be produced at a negative electrode from a low content of moisture in the electrolyte and reduces oxidants by catalyzed production of water. A constant current with a low voltage is applied between a positive catalyzed electrode and a negative catalyzed electrode, each separated by a hydrophilic, insoluble, cationic exchange electrolyte therebetween containing moisture. The cell may consist of corrugated sheets of electrolyte, opposite sides of which may carry the catalytic electrode material; air to be treated is moved across the negative electrode only.
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 August 29, 1991 and granted November 30, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 2013.
- 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.