04478349 is referenced by 71 patents and cites 27 patents.

A thermally insulated vessel for cooking, serving, and storing of foods and beverages, particularly adapted for use in microwave cooking units. A double-walled vessel is provided, including an outer container and a removable inner container, both having substantially similar shapes. The inner container is supported by a grooved flange extending outward from its upper rim which rests on the upper rim of the outer container. The inner container and the outer container are separated by a narrow gap, forming an enclosed air cavity. The flange groove and rim are designed to allow air to escape from the cavity to relieve the pressure caused by hot foods or beverages in the vessel, and to resist air and liquid flow into the cavity as the vessel cools. A raised lid is further provided, fitting over the inner container, and having a flat top and a recessed handle, to allow several vessels to be stacked on each other for cooking or storing.

Title
Insulated dish and lid for microwave cooking
Application Number
2875
Publication Number
4478349
Application Date
December 23, 1980
Publication Date
October 23, 1984
Inventor
Patricia L Haverland
Livermore
CA, US
Walter K Haverland Jr
Livermore
CA, US
Agent
Hume Clement Brinks Willian & Olds
Assignee
Mirro Corporation
WI, US
IPC
A47J 27/00
H05B 6/64
B65D 25/18
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