Method for feeding loose material into an electrolyzer for production of aluminum
CA 2192290 C · Owner: Shelkovnikov, Jury Petrovich · Inventors: Kazantsev, Viktor Konstantinovich; Grinberg, Igor Samsonovich; Ragozin, Leonid Viktorovich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The proposed method includes the following steps: forming at least one material input zone on the surface of electrolyte disposing a working, tool in the input zone to push the material into the melt of electrolyte imparting mechanical oscillations and translatory motions to the working tool in the direction towards the electrolyte and back therefrom with the length of said motions being within the range of values from about 10.0 to about 120.0 sec. The method method further includes transporting material into the input zone and forming some layer in the material input zone and after, accumulation of a sufficient amount of said material the latter enters into contact with the working tool. …
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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 December 6, 1996 and granted March 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 6, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 2018.
- 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.