Colloidal dispersion of a cerium compound and another element selected among zirconium, rare earths, titanium and tin, dispersible solid based on said compound and preparation methods
CA 2606198 C · Owner: Chane-Ching, Jean-Yves · Inventors: Chane-Ching, Jean-Yves
Overview
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The invention concerns a colloidal dispersion in a continuous phase of a cerium compound and another element M selected among zirconium rare earths (Ln) other than cerium, titanium and tin characterized in that the compound is in the form of a mixed oxide wherein the cerium and the element M are in solid solution. It comprises cerium in the form of cerium III in an amount expressed in cerium III/total cerium atomic ratio ranging between 0.005 and 0.06. The dispersion is obtained by forming a liquid medium comprising cerium salts in particular of cerium III, and the element M; contacting the medium with a base to obtain a pH of not less than 9; separating and washing the resulting …
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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.
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- Filed April 18, 2006 and granted July 31, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 18, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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