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US 4,060,599 AGranted
Dentifrices
AssigneeColgate-Palmolive Company
InventorMartin Cordon
Life of this patent
Estimating the term…
Abstract
Dentifrices containing ground crystals of alpha-alumina having a mean ultimate particle size of about 1 to 2 microns. Typically, the size is that essentially 100% are below 10 microns; about 95% are below 5 microns; about 85% are below 3 microns; about 75% are below 2 microns; about 25% are below 1 micron; and about 5% are below 0.5 microns.
Claims6
A dentifrice comprising, as an abrasive, ground crystals of alpha-alumina, ground to its ultimate particle form and having a mean ultimate particle size of about 1 to 2 microns, the proportion of said alpha-alumina being above 0.1% and less than 60%.
Dependencies are inferred from the claim text.