Method for making anode with ruthenium and film forming metal barrier layerand electrocatalytic top layer
CA 1292723 C · Owner: Loftfield, Richard E. · Inventors: Dong, Dennis F.; Loftfield, Richard E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for making an electrode suitable for use in an electrochemical process, comprises providing a base formed at least partially of at least one valve metal or alloy thereof. To said base, a first composition is applied which is a barrier precursor forming composition comprising a compound of ruthenium a compound, of a film-forming metal and a solvent to form a coated layer on, the base. Thereafter the coated base is heated at a temperature from room temperature up to about 280°C for a sufficient period of time to dry the coated base without significant decomposition or oxidation of the compound of ruthenium and said compound of filmforming metal. Then, without baking the coated base …
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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
- Granted December 3, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 3, 2008.
- 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
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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.