Heater having a multiple-layer ceramic substrate and method of fabrication
AssigneePhilip Morris Incorporated
InventorsSeetharama C. Deevi, Mohammad R. Hajaligol, Pamela D. Lieberman, Walter A. Nichols, Michael L. Watkins
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Abstract
A heater having a multiple-layer ceramic substrate and a method for fabricating the heater are provided. The heater consists-of a plurality of ceramic layers which are laminated to form a single ceramic substrate. A plurality of resistive heating elements are deposited onto the multiple-layer ceramic substrate, which are connectable to a power source via conductive elements which extend through the substrate to the resistive heating elements. The heater may also include a terminal that allows for convenient electrical and mechanical interfacing to a smoking article.
Claims27
An electrically powered heater comprising:
- a plurality of adhered ceramic layers forming a multiple-layer ceramic substrate, said multiple-layer substrate having a first surface substrate layer and a second surface substrate layer, said second surface substrate layer comprising border portions adhered to an inner side of said first surface substrate layer along an outer border of said first surface substrate layer;
- and
- a resistive heating element disposed on an outer side of said first surface substrate layer, wherein an internal cavity is defined by the inner side of said first surface substrate layer and inner sides of the border portions of second surface substrate layer.
Dependencies are inferred from the claim text.