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US 8,785,826 B2Granted
Even heating microwavable container
AssigneeGraphic Packaging International, Inc.
InventorsLaurence M. C. Lai, Neilson Zeng, Bing Liu
Life of this patent
Estimating the term…
Abstract
A construct for heating a food item in a microwave oven includes a base, a wall extending upwardly from the base, a microwave energy shielding element overlying at least a portion of the wall, and a microwave energy diffusing element circumscribed by the microwave energy shielding element. The microwave energy diffusing element includes a plurality of microwave energy reflective elements within a microwave energy transparent area.
Claims33
A microwave heating construct, comprising:
- a base;
- and
- an upstanding wall, wherein the wall comprises
- a microwave energy shielding element, and
- a plurality of microwave energy diffuser elements, wherein each of the microwave energy diffuser elements comprises
- a microwave energy transparent area circumscribed by the microwave energy shielding element, and
- a plurality of microwave energy reflective elements spaced apart from one another and positioned in the microwave energy transparent area,
- wherein for each of the microwave energy diffuser elements, the microwave energy transparent area of the microwave energy diffuser element is contiguous with and surrounds each of the microwave energy reflective elements of the microwave energy diffuser element.
5 more elements
A microwave heating construct, comprising:
- a base;
- and
- a plurality of walls, wherein the walls comprise
- a substrate,
- a microwave energy shielding element mounted to the substrate and comprising a metallic foil patch operative for reflecting microwave energy, wherein the metallic foil patch includes a plurality of apertures, and each aperture defines a microwave energy transparent area surrounded by the metallic foil, and
- a plurality of microwave energy diffuser elements, wherein each of the microwave energy diffuser elements comprises
- the microwave energy transparent area defined by a respective aperture of the plurality of apertures in the metallic foil patch, and
- a plurality of metallic foil elements mounted to the substrate, wherein the metallic foil elements are spaced apart from one another and positioned in the microwave energy transparent area of the microwave energy diffuser element,
- wherein for each of the microwave energy diffuser elements, the microwave energy transparent area of the microwave energy diffuser element is contiguous with and circumscribes each of the metallic foil elements of the microwave energy diffuser element.
6 more elements
A blank for forming a microwave heating construct, the blank comprising:
- a peripheral region being substantially transparent to microwave energy;
- a medial region bounded by the peripheral region;
- and
- a central region bounded by the medial region,
- wherein the medial region comprises
- a microwave energy shielding element comprising a metallic foil patch operative for reflecting microwave energy, wherein the metallic foil patch circumscribes apertures that define microwave energy transparent areas, and
- a plurality of microwave energy diffuser elements, wherein each of the microwave energy diffuser elements comprises
- the microwave energy transparent area defined by a respective aperture of the apertures circumscribed by the metallic foil patch, and
- a plurality of metallic foil elements spaced apart from one another and positioned in the microwave energy transparent area of the microwave energy diffuser element,
- wherein for each of the microwave energy diffuser elements, the microwave energy transparent area of the microwave energy diffuser element is contiguous with and extends around each of the metallic foil elements of the microwave energy diffuser element.
7 more elements
Dependencies are inferred from the claim text.