William A Brastad: Packaged food item and method for achieving microwave browning thereof. General Mills, Gene O Enockson, L MeRoy Lillehaugen, May 12, 1981: US04267420 (221 worldwide citation)

A food item is wrapped with plastic film or other dielectric substrate having a very thin coating thereon which controls the microwave conductivity when the package is placed within a conventional microwave oven. The plastic film or other substrate and its coating conform to a substantial surface po ...

William A Brastad, Nelson J Beall: Method and material for prepackaging food to achieve microwave browning. General Mills, Gene O Enockson, L MeRoy Lillehaugen, October 28, 1980: US04230924 (192 worldwide citation)

The food package includes a flexible wrapping sheet of dielectric material, such as polyester or paperboard, capable of conforming to at least a portion of the article of food's shape. The dielectric wrapping sheet has a flexible metallic coating thereon, such as aluminum, in the form of a relativel ...

Oscar E Seiferth: Food receptacle for microwave cooking. James River Corporation, Sixbey Friedman & Leedom, February 3, 1987: US04641005 (190 worldwide citation)

A disposable food receptacle for use in microwave cooking is disclosed which includes a provision to brown the exterior of the food in the receptacle. A thin layer of an electrically conductive material, such as an elemental metal is incorporated into the receptacle on the food contacting surfaces t ...

Lorin R Cole, Terrence P Lafferty: Patterned microwave susceptor. Graphic Packaging Corporation, Dorsey & Whitney, July 2, 2002: US06414290 (158 worldwide citation)

The heating effect of a microwave susceptor can be improved by providing a pattern of microwave transparent areas in the susceptor. The transparent areas are preferably circles having a diameter of about 0.5 inch. The distance between adjacent circles is preferably about 0.5 inch. The susceptor may ...

Richard M Keefer, Cindy M Lacroix: Methods and devices used in the microwave heating of foods and other materials. Beckett Technologies, Sim & McBurney, May 21, 1996: US05519195 (148 worldwide citation)

A method and device for enhancing the heating of a surface layer of an article being heated by microwave energy is characterized by directing the energy through the surface layer into a main portion of the article in such a manner that the modes of the energy are in cut-off in the surface layer.

Laurence Lai, Neilson Zeng: Microwavable container having active microwave energy heating elements for combined bulk and surface heating. Graphic Packaging Corporation, Dorsey & Whitney, November 21, 2000: US06150646 (146 worldwide citation)

A microwavable container includes an outer sleeve (12) and an inner tray (14) within the sleeve designed to carry a food product. A first active microwave energy heating element (28) is on the sleeve and disposed opposite the tray. A second active microwave energy heating element (74-102) is within ...

Neilson Zeng, Laurence Lai, Anthony Russell: Abuse-tolerant metallic packaging materials for microwave cooking. Graphic Packaging Corporation, Dorsey & Whitney, March 20, 2001: US06204492 (140 worldwide citation)

An abuse-tolerant microwave food packaging material includes repeated sets of metallic foil or high optical density evaporated material segments disposed on a substrate. Each set of metallic segments is arranged to define a perimeter having a length equal to a predetermined ratio of the operating, o ...

Neilson Zeng, Laurence M C Lai: Patterned microwave susceptor element and microwave container incorporating same. Graphic Packaging International, Dorsey & Whitney, April 6, 2004: US06717121 (138 worldwide citation)

A container has a patterned susceptor region in the bottom, a fold region between the bottom and the sidewall of the container, a sidewall region, and a flange region that forms a flange or lip of the container. The patterned susceptor region includes arrangements of microwave-interactive features d ...

Thomas D Pawlowski, Richard K Brown: Sleeve for crisping and browning of foods in a microwave oven and package and method utilizing same. James River Corporation, Sixbey Friedman Leedom & Ferguson, October 4, 1988: US04775771 (136 worldwide citation)

A microwave browning and crisping sleeve as well as a package assembly and method of microwave heating of food using the sleeve, wherein a paperboard strip has a microwave interactive layer affixed over one surface of the paperoard strip, the paperboard strip being subdivided by fold lines into at l ...

D Gregory Beckett: Microwave heating structure. Beckett, Sim & McBurney, November 9, 1993: US05260537 (134 worldwide citation)

The structure includes a layer of flexible electroconductive material normally opaque to microwave radiation and having a plurality of apertures therethrough dimensioned to permit microwave energy to pass through to the interior of the foodstuff and to produce thermal energy at the surface of the fo ...