Metal compound removal
CA 2491894 C · Owner: Brandts, Jim Aloysius Maria · Inventors: Brandts, Jim Aloysius Maria; Berben, Pieter Hildegardus
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 a process for separating at least one metal compound and/or a component thereof from a mixture said process comprising , contacting the said mixture with a heteropoly acid or heteropoly acid anion thereby producing a precipitate comprising the heteropoly acid or heteropoly acid anion and the metal compound and/or a component thereof. The present invention further relates to a process for the purification of a mixture containing at least one metal compound said process comprising contacting the said mixture with a heteropoly acid or heteropoly acid anion thereby , producing a precipitate that is substantially insoluble in the said reaction mixture and …
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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 7, 2003 and granted November 6, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 7, 2025.
- 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.