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US 4,866,235 AGranted
Microwavable containers useful for controlled heating
AssigneeThe BOC Group, Inc.
InventorsDon Griffin, Steven J. Nadel, Tamzen L. Van Skike
Life of this patent
Estimating the term…
Abstract
A container useful in microwave heating of foods comprises a substrate with a titanium nitride film on at least a portion of the substrate. The substrate is substantially microwave transparent except where coated with the titanium nitride film. The film is adapted to absorb microwave energy. The film thus becomes heated and transfers heat to foods when adjacent the film. This heat transfer provides crisp heating of foods, such as fried chicken, french fries and the like.
Claims9
A container, useful in microwave heating of foods, comprising:
- a substrate being substantially microwave transparent and having a determinable melting or scorching temperature;
- and,
- a titanium nitride film on at least a portion of the substrate, the film being adapted to absorb microwave energy, to become heated and to transfer heat to foods when adjacent the film.
A microwavable container comprising:
- a tray defining a food receiving cavity, the cavity having a thin film adhered thereto with a sheet resistivity of between about 200 to about 900 ohms/square, the film consisting essentially of a titanium nitride.
Dependencies are inferred from the claim text.