03.22.19
US Patent No. 10,226,407 B2 (Shiri Nawrocki, Viktor Dubovoy, Long Pan, Zhigang Hao, Nihal Dogu, Dayton); Colgate-Palmolive Company has patented an oral care composition that is comprised of an aqueous soluble tin phosphate complex formed from a mixture comprising tin fluoride or tin chloride and a tripolyphosphate salt. The complex can be formed in situ in an aqueous solution and combined with the composition, or can be isolated from the aqueous solution in solid form and combined with the composition or can be lyophilized and combined with the composition; or can be isolated with an anti-solvent and combined with the composition.