Electrolytic reduction of metal oxides such as titanium dioxide and process applications
CA 2401034 C · Owner: Metalysis Limited · Inventors: Godfrey, Alistair Bryan; Ward-Close, Charles Malcolm
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of removing oxygen from a solid metal metal compound or semi-metal , M1O by electrolysis in a fused salt of M2Y or a mixture of salts which , comprises conducting electrolysis under conditions such that reaction of oxygen rather than M2 deposition occurs at an electrode surface and that oxygen dissolves in the electrolyte M2Y and wherein M1O is in the form of , (sintered) granules or is in the form of a powder which is continuously fed into the fused salt. Also disclosed is a method of producing a metal foam comprising the steps of fabricating a foam-like metal oxide preform removing , oxygen from said foam structured metal oxide preform by electrolysis in a fused salt of M2Y …
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 February 20, 2001 and granted October 29, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 20, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 20, 2023.
- 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.