US Patent 8722759 Fillers and composite materials with zirconia and silica nanoparticles
Patent 8722759 was granted and assigned to 3M on May, 2014 by the United States Patent and Trademark Office.
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Patent abstract
Fillers containing silica-zirconia nanoclusters are disclosed. The fillers may be prepared by mixing a sol of silica nanoparticles with a sol of preformed, crystalline nanozirconia particles. The fillers provide desirable optical properties, such as opalescence, and are useful in dental compositions.
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Patent Inventor Names
Bradley D. Craig0
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US Patent 08722759 Fillers and composite materials with zirconia and silica nanoparticles US Patent 8722759 Fillers and composite materials with zirconia and silica nanoparticles
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Patent Number
08722759
Patent Number
8722759
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Official Website
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US Patent 08722759 Fillers and composite materials with zirconia and silica nanoparticles
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Is a
Current assignee
Patent jurisdiction
Patent number
08722759
Date of patent
May 13, 2014
Patent application number
13123749
Date Filed
October 9, 2009
Patent primary examiner
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