Patents

Oral Dentrifice Powder Contains Shells, Coral

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By: TOM BRANNA

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US Patent No. 9,554,974 B2; Tieh-Chun Tang of Rowland Heights, CA has patented a method for the large scale industrial production of a dentifrice powder containing pure nano calcium supplements obtained from raw materials including pearl, mother of pearl, red coral, 22-28 oyster shells, clam shells, and giant clam shells. The following steps are applied separately to each of said raw materials: A. sand blasting each raw material to remove surface contaminants; B. grinding each raw material...

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