Electrodes for aluminum reduction cells
CA 1069461 A · Owner: Sumitomo Aluminium Smelting Company · Inventors: Yamada, Koichi; Horinouchi, Kazuo; Hashimoto, Tadanori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for producing aluminum by molten salt electrolysis of aluminum oxide and in particular to an electrode used in the aluminum reduction cell wherein an electrode base, at least in that portion which is brought into contact with the molten salt bath, is coated with a composition comprising at least 50% by weight of electronic conductive oxide ceramics, or said portion of the electrode is made of said composition.
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
- Granted January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.