Composite cookware having ceramic coated aluminum edges

Details Composite cookware having ceramic coated aluminum edges Composite cookware having ceramic coated aluminum edges

2007-01-30

2007-01-30

Hong, John C. (Department: 3726)

Metal working

Method of mechanical manufacture

Assembling or joining

C029S428000, C220S573100

Reexamination Certificate

active

10804813

ABSTRACT:
A method of manufacturing composite cookware or bakeware comprising the steps of (a) providing a bonded multi-layer composite sheet of material having at least one layer of an aluminum or aluminum alloy material; (b) forming a cookware vessel of a desired configuration having the aluminum or aluminum alloy layer exposed at least at an edge portion of the formed cookware vessel; and (c) treating at least the exposed edge of aluminum or aluminum alloy by a micro arc oxidation process to form an Al2O3coating on at least the exposed edge of aluminum or aluminum alloy whereby chemical corrosion/erosion of the exposed edge by caustic cleaning agents is prevented.

REFERENCES:
patent: 3490126 (1970-01-01), Miller
patent: 3930806 (1976-01-01), Racz
patent: 3952938 (1976-04-01), Ulam
patent: 3966426 (1976-06-01), McCoy et al.
patent: 4167606 (1979-09-01), Ulam
patent: 4246045 (1981-01-01), Ulam
patent: 4646935 (1987-03-01), Ulam
patent: 6197178 (2001-03-01), Patel et al.
patent: WO200250343 (2002-06-01), None
Microplasmic product literature from website www.microplasmic.com, The Microplasmic Process (Jul. 9, 2002).
Mofra Tech product literature from website www.mofratech.com, the ALTIM® process (Apr. 3, 2002).

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