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P&G Patents

March 9, 2006

Patent No. US 6,992,052 B2: A process of preparing in-situ water-soluble zinc salt for automatic dishwashing compositions has been assigned to Procter & Gamble. The preparation process comprises dispersing zinc oxide in water and combining an acid with the mixture, mixing, maintaining a pH range and combining the mixture with at least one rinse aid ingredient.
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