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Dentifrice Patented By Kao Corp., Japan

November 22, 2005

Patent No. US 6,808,700 B2: Kao Corp., Tokyo, researchers earned a patent for a dentifrice comprising a dentifrice vehicle and granules consisting essentially of calcium particles, having an average granule size of 50-500µ and a crushing resistance of one-20 g/granuele, wherein said calcium carbonate particles have an average primary particle size of 0.01-0.5µm as measured by microscopy.

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