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US 9,764,887 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.
Claims23
A microwave heating construct, comprising:
- a base;
- and
- an upstanding wall comprising:
- a microwave energy shielding element, and
- a microwave energy diffuser element comprising:
- 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 such that the plurality of microwave energy reflective elements collectively diffuse microwave energy passing through the microwave energy transparent area,
- wherein 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 blank for forming a microwave heating construct, the blank comprising:
- a peripheral region 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 an aperture that defines a microwave energy transparent area, and
- a microwave energy diffuser element comprising:
- the microwave energy transparent area defined by the aperture 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 such that the plurality of metallic foil elements collectively diffuse microwave energy passing through the microwave energy transparent area,
- wherein 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.