Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
James D Waters0
Ray O. Knoeppel0
Glenn Pfendt0
Date of Patent
August 12, 2008
0Patent Application Number
101909570
Date Filed
July 8, 2002
0Patent Primary Examiner
Patent abstract
A water-resistant porcelain enamel coating and method of making the same is provided. The porcelain enamel coating is prepared using a borosilicate glass frit, and mill additions of silica and a zirconia compound. The mixture is applied to a metal substrate and fired, resulting in a water-resistant coating that resists cracking and crazing. The coating is particularly useful in water heaters. In one embodiment, the coating comprises a fine zirconia compound having a median particle size of less than 10 microns.
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