Stick resistant coating for cookware
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United States of America Patent
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Mar 26, 2002
Grant Date -
N/A
app pub date -
Dec 15, 1998
filing date -
Dec 16, 1997
priority date (Note) -
Expired
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Abstract
A method for making a stick resistant cook surface or cooking vessel having the stick resistance in which a hard substrate metal is buffed/polished to a high luster surface finish of less than 20 micro inches and then coated with a layer of zirconium nitride. The method further includes the step of polishing a stamped blank to the desired surface smoothness prior to the drawing/shaping step to provide a stick resistant surface in cooking vessels having side walls, such as pots and pans, which are otherwise difficult to buff in the interior due to the side wall geometry.
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