Water treatment method in high cycle dispensing systems for...

Liquid purification or separation – Processes – Preventing – decreasing – or delaying precipitation,...

Reexamination Certificate

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C210S699000, C222S001000

Reexamination Certificate

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07144513

ABSTRACT:
The invention relates to a method that reduces limestone scale deposit on surfaces and in heating elements, especially, for drinking water in foodservice vending and dispensing machines without affecting the water quality. The method includes passing the water through metal particulate and polyphosphates to remove minerals therefrom and thus reduce scale deposits upon water contacted portions of such machines.

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patent: 6270664 (2001-08-01), Tsabari
patent: 6553894 (2003-04-01), Hamon et al.
patent: 6641727 (2003-11-01), Aldred et al.

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