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US 5,672,407 AGranted
Structure with etchable metal
AssigneeBeckett Technologies Corp.
InventorD. Gregory Beckett
Life of this patent
Estimating the term…
Abstract
A self-supporting layer of flexible etchable metal having a thickness of about 1 micron has a plurality of apertures formed therethrough and has a layer of etchant resistant material on each face of the metal layer in a pattern completely overlying the metal layer and the periphery of the plurality of apertures.
Claims3
A novel element, comprising:
- a self-supporting flexible layer of aluminum having a thickness of about 1 to about 15 microns, having a first face and a second face and having a plurality of apertures formed therethrough with each said aperture being in registry in each said face,
- said plurality of apertures comprising a plurality of elongate slots in said self-supporting flexible layer of aluminum sized and arranged to generate thermal energy when the element is adjacent a foodstuff and exposed to microwave radiation,
- a layer of aqueous sodium hydroxide -resistant material adhered to each said face of said self-supporting flexible layer of aluminum in a pattern completely overlying said aluminum layer and defining the periphery of each of said plurality of apertures, and
- a layer of dielectric material adhered to and coextensive with each face of said element.
1 more element
Dependencies are inferred from the claim text.