Back to results
US 10,683,156 B2Granted
Microwave heating container
AssigneeGraphic Packaging International, Inc.
InventorsLaurence M. C. Lai, Sandra M. Tsontzidis, Bing Liu, Angela Chen Li, Neilson Zeng
Life of this patent
Estimating the term…
Abstract
A microwave heating construct comprises a base, a wall extending upwardly around the base for defining a cavity for receiving a food item, and a microwave energy shielding element overlying a lower margin of the wall, the microwave energy shielding element having an upper edge including a substantially incurved portion.
Claims21
A method of forming a microwave heating construct, the method comprising:
- obtaining a blank comprising a central region, a medial region adjacent the central region, a peripheral region adjacent the medial region, and a microwave energy shielding element in the medial region, the microwave energy shielding element has an outer edge;
- positioning the central region to at least partially form a base of the microwave heating construct;
- positioning the peripheral region and at least a portion of the medial region to form a wall extending upwardly from the base and extending around the base, a lower margin of the wall is positioned adjacent the base,
- the microwave energy shielding element overlying the lower margin of the wall and extending around the base,
- the outer edge of the microwave energy shielding element forms an upper edge of the microwave energy shielding element that includes a downwardly curved portion that curves downwardly toward the base and is positioned along the lower margin of the wall and proximate the base.
2 more elements
A blank for forming a microwave heating construct, the blank comprising:
- a central region for at least partially forming a base of the microwave heating construct, a medial region adjacent the central region, a peripheral region adjacent the medial region, the peripheral region and at least a portion of the medial region being for forming a wall extending upwardly around the base of the microwave heating construct, a lower margin of the wall is adjacent the base;
- a microwave energy shielding element in the medial region, the microwave energy shielding element is for overlying the lower margin of the wall of the microwave heating construct and extending around the base of the microwave heating construct, the microwave energy shielding element has an outer edge that corresponds to an upper edge of the microwave energy shielding element in the microwave heating construct formed from the blank, the upper edge includes a downwardly curved portion that curves downwardly toward the base and is positioned along the lower margin of the wall and proximate to the base in the microwave heating construct formed from the blank.
Dependencies are inferred from the claim text.