Separation of platinum group metals
CA 2314697 C · Owner: Anglo American Platinum Corporation Limited · Inventors: Smith, Christopher Stanley
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to methods and apparatus for the interseparation of platinum group metals. In particular the invention allows , for , the first time a clear separation of the insoluble metals rhodium iridium and , ruthenium from one another and from platinum in addition to other platinum , group metals using gel chromatography and control of the oxidation state of the , platinum group metals.
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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 July 28, 2000 and granted April 19, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 28, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 2022.
- 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.