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Colgate Earns Patent



Published November 14, 2005
Related Searches: ink patent cleaning acid
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● Patent No. US 6,608,022 B1: Colgate-
Palmolive Co. researchers in Canada
patented a multi-layered cleaning
tablet which contains lactic acid; an
alkali metal bicarbonate; bentonite
clay containing a blue, green or pink
dye; at least one anionic surfactant; a
microcrystalline methyl cellulose; an
alkali metal carbonate; a bleach-containing
compound; a precipitated silica;
a polyethylene glycol; an ethoxylated
nonionic surfactant; adipic acid and a
blue or green dye.


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