Abstract: A packaged food product is configured for being heated in a solid state microwave oven and a method heats a food in a solid state microwave oven. Particularly, the packaged food product includes a food, a tray and a susceptor, and a thermal insulation is positioned between the susceptor and the food.

Abstract: The present invention relates to a vessel having an area for holding at least one food item for being heated in a solid state microwave oven. Additionally, disclosed is a method for heating a food item in a solid state microwave oven. Particularly, the vessel comprises a tray having an area for holding at least one food item and a susceptor wherein there is a thermal insulation between the susceptor and the food item. The tray may include two- or multi-compartment configurations wherein the susceptor only spans at least along a portion of one compartment to heat various food item simultaneously within a solid state microwave oven.

Abstract: A microwave oven having an enclosed cavity is provided including an RF signal generator; a solid state amplifier having a coplanar waveguide transmission line, the amplifier coupled to the RF signal generator for receiving and amplifying the RF signals generated thereby; an intermediate transition including: a metal boundary having a first section and a second section having different dimensions than that of the first section; a first dielectric disposed in the first section; a second dielectric disposed in the second section; and a center conductor extending from a first side of the substrate to a second side of the substrate through the first and second dielectrics, where a first end of the center conductor is connected to an output of the amplifier; and an antenna coupled to a second end of the center conductor for receiving the amplified RF signals and introducing electromagnetic radiation into the cavity.

Abstract: An apparatus for heating a load with microwave energy is provided. The microwave energy is applied by the apparatus at frequencies wherein the load's dielectric constant is within a predetermined range. The apparatus may include a microwave power source configured to supply microwave energy at the applied frequencies; and a radiating plate. The radiating plate may include an electrically conductive structure that includes a plurality of radiating elements; and a feeding port, connecting the electrically conductive structure to the microwave power source. The radiating plate is configured so that most of the power fed from the microwave source through the feeding port returns towards the power source when no load is contacting the radiating plate, and most of the power fed from the microwave source through the feeding port is absorbed by the load to be heated by the apparatus when the load is contacting the radiating plate, even in absence of a microwave cavity that encloses the radiating plate and the load.

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.

Abstract: The microwave bacon cooker is a cooking vessel. The microwave bacon cooker is configured for use with a microwave oven. The microwave bacon cooker is configured for use with bacon. The microwave bacon cooker contains the bacon while the bacon cooks in the microwave oven. The microwave bacon cooker comprises a tray, a foraminous cooking surface and a lid. The lid attaches to the tray. The foraminous cooking surface is contained within the structure formed by the lid and the tray.

Abstract: A microwave generator for a microwave device includes a single component carrier for control components and power components, which includes a continuous carrier material. Two power regions and one control region are provided on the component carrier. In the control region, electrically functional components are arranged on both flat sides of the component carrier, while in the power regions, electrically functional components with at least one power switch are arranged only on an upper flat side, heat sinks being arranged on the lower flat side. An RF substrate is provided in regions on the upper flat side of the power region.

Abstract: An oven may include a cooking chamber configured to receive a heat modulating material (HMM), a radio frequency (RF) heating system configured to provide RF energy into the cooking chamber, and a cooking controller configured to control the frequency of RF energy provided by the RF heating system into the cooking chamber. The MINI may be configured to contain a food product and may include a thermally active section. The thermally active section may include a base matrix and a particulate material dispersed in the base matrix.

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.

Abstract: This invention relates to a microwaveable composition comprising a batter component comprising from about 10 wt % to about 45 wt % of flour, from about 0.2 wt % to about 1.0 wt % of an encapsulated leavening agent, and from about 10 wt % to about 35 wt % of water, by weight of the batter component, and a paste component, the composition being microwaveable at a power output of between about 800 W and about 2100 W from a frozen state to a multi-layered cooked product in less than about 50 seconds. The invention also relates to a method for preparing the microwaveable composition.

Abstract: A microwave heating apparatus and a method for heating/browning a piece of food by means of microwaves are provided. The microwave heating apparatus comprises a cavity arranged to receive, in a substantially horizontal browning region, a piece of food to be browned. The microwave heating apparatus further comprises a microwave source for generating microwaves and a rotatable antenna arranged at the cavity bottom for supplying the generated microwaves. The antenna is configured to produce at least one radiating lobe pointing towards the browning region such that the intersection between the radiating lobe and the browning region forms a hot spot, thereby forming a ring-shaped heating pattern in the browning region under rotation of the antenna. The present invention is advantageous in that a microwave heating apparatus with an improved crisp function is provided.

Abstract: An induction heatable article such as a pan is provided having a synthetic resin body with at least one susceptor coil secured to the body and operable under the influence of an induction field to generate Joule heating within the coil to thereby heat the body. The coil has a plurality of zones, each adjacent a different portion of the body and capable of providing respective, different magnitudes of Joule heating-derived energy per unit time in the zones. A multiple-pan, modular food heating/warming table includes a table supporting an array of individually controllable induction heaters with a plurality of synthetic resin, food-holding pans positionable on the table, wherein each pan has a zoned susceptor coil for induction heating of the pans.

Abstract: A method for heating a plurality of articles according to a prescribed heating profile is provided. The method includes heating a first test article in a small-scale microwave heating system and, based on the value of one or more parameters determined during this small-scale heating, determining a prescribed heating profile for the test article. Suitable parameters can include for example, net power discharged, sequential microwave distribution, average temperature and flow rate of the fluid in the heating chamber, and residence time. The heating profile can then be used to control a commercial-scale microwave heating system used to heat a plurality of similar articles.

Abstract: A cookware system includes a microwaveable metal collecting pan, configured in a bowl shape with a plurality of elongated slots disposed thereon. The collector pan is positioned in a supporting bowl to catch dripping fluids and to provide a basin to hold water during steam cooking. A food item can be placed inside the pan, which is in turn placed inside the bowl and covered with a lid.

Abstract: Multicore electric wires 31 for connecting an operation key sheet 4a and a control section of an oven body are loosely inserted into a hinge shaft 5b in a cylindrical shape and a door pipe 30 in a cylindrical shape having a length exceeding a half of the height of a door 2, and the door pipe 30 guides the electric wires 31 along the axial direction of the hinge shaft 5b. When the door 2 is opened/closed, torsional stress caused in the electric wires 31 are dispersed over the electric wires 31 disposed correspondingly to the length of the door pipe 30.

Abstract: A microwave heating construct has a platform including microwave energy interactive material and a plurality of venting features. The venting features include a plurality of tabs that are urged out of the plane of the platform to define an aperture. The tabs are disposed beneath the platform to define a void in communication with the aperture.

Abstract: A field director assembly includes electrically conductive vanes configured to prevent arcing in an unloaded microwave oven.

Abstract: A packaging container which includes a synthetic resin container body having a flange part and the cover member heat-sealed to the flange part of the container body. The cover member includes (1) an upper member in which inner surfaces of resin films are positioned opposite to each other to form an abutted part, an unsealed part communicating with the inside of the container body is formed by heat-sealing a peripheral edge part of the abutted part excluding one side of the abutted part forming a base part, and the steam releasing seal part is formed at the abutted part and (2) a lower member which covers a lower surface of the upper member and in which a steam guide part communicating with the inside of the container body is formed at or near the base part of the abutted part.

Abstract: A microwave heating construct includes a platform having a plurality of peripheral edges, a plurality of elevating panels for maintaining the platform in a raised position, and a layer of microwave energy interactive material overlying at least a portion of the platform. The platform includes a movable portion defined at least partially by a line of disruption extending substantially between a pair of adjacent edges of the platform. The movable portion of the platform is adapted to pivot along the line of disruption.

Abstract: Embodiments of the invention include food products and related methods. In an embodiment, the invention includes a food product. The food product can include a container and a food composition. The container can include a bottom wall and a side wall. The bottom wall can include a microwave reflector. The side wall can include a material that is substantially transparent to microwaves. The microwave reflector can cover at least about 80 percent of the surface area of the bottom wall. In an embodiment, the invention includes a microwaveable food container. The microwaveable food container can include a bottom wall and a side wall. The bottom wall can include a microwave reflector. The side wall can include a material that is substantially transparent to microwaves. The microwave reflector can cover at least about 80 percent of the surface area of the bottom wall. Other embodiments are also included herein.

Abstract: A container includes a microwave interactive web at least partially overlying and joined to a three-dimensional support, wherein the three-dimensional support may be formed prior to having the microwave interactive web mounted thereto. The three-dimensional support may be a preformed container that is sufficiently rigid and dimensionally stable for use in containing food.

Abstract: A self-supporting field director for use in heating an article in a microwave oven is characterized by a plurality of vanes, each vane extending radially outwardly from a central axis and being angularly adjacent to two other vanes. The vanes are supported by a slotted central support member. Each vane has a substrate formed from an electrically non-conductive material. A portion of at least one of the first and second major surfaces is covered by an electrically conductive material.

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.

Abstract: A method of delivering energy to an object in a cavity may include transmitting electromagnetic energy to the cavity at a plurality of frequencies. At each of the plurality of frequencies, the method may also include determining an efficiency of energy transfer into the object and adjusting power transmitted at each of the plurality of frequencies such that a multiplicative product of the efficiency and the power transmitted is substantially constant across each of the plurality of frequencies.

Abstract: A reusable self-supporting field director structure for use in heating an article in a microwave oven is characterized by an integral array of rigid vanes extending radially outwardly from a central axis, the vanes being molded from an electrically non-conductive heat-resistant material. At least a portion of one major surface of each vane has an electrically conductive material embedded thereinto. The electrically non-conductive heat-resistant material is either a polymeric resin (with an optional reinforcing matrix) or paperboard material. A plurality of bracing members, each extending between the first major surface of one vane and the second major surface of an adjacent vane, may be integrally molded into the field director structure.

Abstract: A reusable self-supporting field director useful for heating an article in a microwave oven is characterized by a plurality of vanes, each vane extending radially outwardly from a central axis and being angularly adjacent to two other vanes. The vanes are attached to each other at their inner ends. Each vane has a substrate formed from an electrically non-conductive material, and an electrically conductive sheath encasing the substrate so that a portion of the first and second major surfaces are covered by an electrically conductive material. The sheath is arranged on the substrate in a laterally symmetric fashion so that thermal expansion effects due to heating are equalized across the thickness of each vane.

Abstract: A raised platform for microwave cooking of a food product includes legs that extend to elevate a food product support surface above the floor of a microwave oven during cooking. At least one fold line extends across the food product support surface about which the food product support surface and any food product thereon can be folded. Susceptor material of the food product support surface is disposed on both sides of a fold region of the support surface and extends on both sides of the at least one fold line. The fold region is substantially free from the susceptor material allowing a food product heated on the food product surface to remain flexible to permit folding of the food product with reduced cracking or breaking. The raised platform may further include a second susceptor material disposed on a bottom surface of the food product support surface.

Abstract: A reusable self-supporting field director for use in heating an article in a microwave oven is characterized by a plurality of vanes, each vane extending radially outwardly from a central axis and being angularly adjacent to two other vanes. The vanes are attached to each other at their inner ends. Each vane has a substrate formed from an electrically non-conductive material and an electrically conductive wrapper that wraps the substrate so that a portion of the first and second major surfaces are covered and the radially outer end of each vane is wrapped by an electrically conductive material. The wrapper and the substrate are arranged in a laterally symmetric fashion so that thermal expansion effects due to heating are equalized across the thickness of each vane.

Abstract: The invention relates to a method for producing self supporting container parts, such as dishes or covers, for containers for foodstuffs to be treated in a microwave oven, said containers each comprising at least one compartment for receiving the foodstuffs, along at least part of the circumferential surface of which compartment a microwave-radiation influencing material layer is provided in the wall of at least one associated container part, comprising the steps of providing a multilayer foil comprising said microwave radiation-influencing material layer and at least one material layer that does not influence microwave radiation, which is bonded thereto on at least one side of the microwave radiation-influencing material layer, bonding one side of the multilayer foil to a remaining portion of the container part in question, in such a manner that the material layer of the multilayer foil that does not influence microwave radiation is present on a free surface of the container part.

Abstract: Multilayer freezable/microwaveable films and packages having both low temperature resistance to withstand subzero freezer storage temperatures and high temperature resistance to withstand microwave cooking temperatures. The freezable/microwaveable films and packages include, for example, a film having at least three coextruded layers including an inner heat sealable layer, at least one core layer adjacent to the heat sealable layer, and an outer skin layer adjacent the core layer opposite the heat sealable layer. Preferably, the films and packages further include an outer protective layer laminated to the outer skin layer. The freezable/microwaveable packages can include a venting system, such as vent slits or a vent valve in the package, or vents in at least one seal of the package, to facilitate microwave heating or cooking of the package contents.

Abstract: A microwave heating construct comprises a first panel and a second panel, each comprising a microwave energy interactive material. The panels are partially joined to one another in an opposed, facing relationship such that an unjoined area is defined between the first panel and the second panel. The unjoined area is in communication with an open peripheral edge of the construct. The first panel includes an aperture in communication with the unjoined area between the first panel and the second panel.

Abstract: Shelf stable microwave dessert packaged food products for individual servings comprise a novel, shielded packaging or container including a microwave shielded cup; a shelf-stable ready-to-heat uncooked product disposed within the cup, a modified low oxygen atmosphere in the headspace above the batter, and a peelably removable, low gas permeability sealing membrane. The articles provide high preparation abuse tolerance notwithstanding the low, controlled portion quantities (100 calorie) of batter.

Abstract: A susceptor assembly includes electrically conductive vanes positioned with respect to each other and to an planar susceptor member having an electrically lossy layer thereon to prevent overheating of the susceptor in an unloaded microwave oven.

Abstract: Microwavable bags can include one or more seals formed by a cold seal adhesive. The one or more seals can prevent egress of liquid oil from the bag.

Abstract: A microwave heating construct for preparing a food item having a periphery that is desirably browned and/or crisped includes a substantially planar base and a plurality of side walls extending upwardly from a periphery of the base. The base and side walls define an interior space for receiving the food item. The base includes a plurality of movable portions for being moved out of the plane of the base into the interior space towards the periphery of the food item. A microwave energy interactive material may be joined to at least a portion of the base including the movable portions. The microwave energy interactive material may be operative for converting at least a portion of impinging microwave energy into heat.

Abstract: A susceptor assembly includes electrically conductive vanes configured to prevent arcing in an unloaded microwave oven.

Abstract: A collapsible field director includes at least one master vane and at least first and second slave vanes. The master vane includes a conductive flap that is articulably attached to a mounting flange. The flange is attached to a planar support member having openings or slots formed therein. Each slave vane has a mounting tab thereon. The slave vanes are flexibly connected to the master vane. The slave vanes are flexibly displaceable with respect to the conductor flap and the conductor flap is articulably movable with respect to the mounting flange so that the field director structure, in the deployed state, occupies a self-supported disposition in which the conductor flap is oriented perpendicular to the mounting flange and the slave vanes are angularly spaced from the master vane with the tabs on the slave banes being received in openings or slots in the planar member.

Abstract: Some aspects of the invention may be directed to an apparatus and method for applying RF energy to containers. The containers (e.g., pots, tanks, vats, kettles, reactors, etc.) may contain an object to be heated or processed by EM energy. The object may be in the liquid phase, gas phase, solid phase or any combination of phases thereof. The apparatus may comprise an outer housing. Optionally the outer housing may be substantially opaque to RF energy. The apparatus may further comprise an inner housing disposed at least partially within the outer housing, wherein at least a portion of the inner housing is configured to transmit RF energy. The apparatus may include at least one radiating element configured to apply RF energy to an energy application zone within the inner housing. In some embodiments the at least one radiating element is located external to the inner housing, optionally between the inner housing and the outer housing.

Abstract: A microwave oven cooking container is provided for evenly cooking foodstuff without risk of sparking during cooking. The container includes at least one compartment, and has at least two separate shields disposed on the container. A first shield is made of a material substantially opaque to microwave energy and is disposed on an outer or an inner surface of the compartment, with a shape generally corresponding to the outer shape of the compartment and optionally having an aperture on the base. The container further includes a lidding configured to seal the container closed, the lidding having a second shield disposed on the lidding, such as at a predetermined distance from the container sidewalls. Further, a multi-compartment container is configured to provide shielding for a food having a low specific heat capacity with one or more compartments arranged around and at least partially surrounding a shielded central compartment for the food.

Abstract: A reusable self-supporting field director for use in a microwave oven is characterized by a plurality of vanes, each extending radially outwardly from a central axis. The vanes are supported in a slotted central support member. Each vane has a predetermined thickness dimension. Each vane comprises a substrate formed from an electrically non-conductive material having a predetermined coefficient of thermal expansion and an electrically conductive wrapper having a predetermined coefficient of thermal expansion that is different from the coefficient of thermal expansion of the substrate. The wrapper wraps the substrate so that a portion of the first and second major surfaces are covered and the radially inner end of each vane is wrapped by an electrically conductive material. The wrapper and the substrate are arranged in a laterally symmetric fashion so that thermal expansion effects due to heating are equalized across the thickness of each vane.

Abstract: A self-supporting field director structure for use in heating an article in a microwave oven is characterized by a vane array comprising a plurality of V-shaped vane doublets, wherein each vane doublet itself comprises a first and a second vane. Each vane extends radially outwardly from the central axis. Each vane has a substrate formed from an electrically non-conductive material, with a portion of each vane being electrically conductive. A vane support structure is attached to the vane array.

Abstract: A reusable self-supporting field director for use in a microwave oven is characterized by a plurality of vanes, each extending radially outwardly from a central axis. The vanes are supported in a slotted central support member. Each vane has a predetermined thickness dimension. Each vane comprises a substrate formed from an electrically non-conductive material having a predetermined coefficient of thermal expansion and an electrically conductive wrapper having a predetermined coefficient of thermal expansion that is different from the coefficient of thermal expansion of the substrate. The wrapper wraps the substrate so that a portion of the first and second major surfaces are covered and the radially inner end of each vane is wrapped by an electrically conductive material. The wrapper and the substrate are arranged in a laterally symmetric fashion so that thermal expansion effects due to heating are equalized across the thickness of each vane.

Abstract: A reusable self-supporting field director for use in heating an article in a microwave oven is characterized by a plurality of vanes, each vane extending radially outwardly from a central axis and being angularly adjacent to two other vanes. The vanes are attached to each other at their inner ends. Each vane has a substrate formed from an electrically non-conductive material and an electrically conductive wrapper that wraps the substrate so that a portion of the first and second major surfaces are covered and the radially outer end of each vane is wrapped by an electrically conductive material. The wrapper and the substrate are arranged in a laterally symmetric fashion so that thermal expansion effects due to heating are equalized across the thickness of each vane.

Abstract: A multi-temperature and multi-texture frozen food microwave heating tray includes a first integral compartment defined by at least one sidewall and an upwardly convex bottom, and a second integral compartment defined by at least one sidewall and a bottom and comprising a microwave energy access modulating structure for one of the first and second compartments.

Abstract: A reusable self-supporting field director for use in heating an article in a microwave oven is characterized by a plurality of vanes, with each vane extending radially outwardly from a central axis and being angularly adjacent to two other vanes. The vanes are attached to each other at their inner ends. Each vane is formed from an electrically non-conductive outer jacket having a predetermined coefficient of thermal expansion and an inner layer of an electrically conductive material having a predetermined coefficient of thermal expansion that is different from the coefficient of thermal expansion of the outer jacket. The inner layer and the outer jacket are arranged in a laterally symmetric fashion with the inner layer being substantially completely enclosed within the electrically non-conductive outer jacket, so that thermal expansion effects due to heating are equalized across the thickness of each vane.

Abstract: A self-supporting field director for use in heating an article in a microwave oven is characterized by a plurality of vanes, each vane extending radially outwardly from a central axis and being angularly adjacent to two other vanes. The vanes are supported by a plurality of bracing members, each bracing member extending between adjacent vanes and being attached thereto. Each vane has a substrate formed from an electrically non-conductive material. A portion of at least one of the first and second major surfaces is covered by an electrically conductive material.

Abstract: A reusable self-supporting field director for use in a microwave oven is characterized by a plurality of vanes, with each vane extending radially outwardly from a central axis. Each vane is angularly adjacent to two other vanes and is attached to each other at their inner ends. Each vane has a predetermined thickness dimension. Each vane is formed from a pair of electrically non-conductive outer laminae, each having a predetermined coefficient of thermal expansion, and an inner core formed of an electrically conductive material. The core has a predetermined coefficient of thermal expansion that is different from the coefficient of thermal expansion of the outer laminae. The inner core and the outer laminae are arranged in a laterally symmetric fashion with the inner core being completely enclosed within the non-conductive outer laminae so that thermal expansion effects due to heating are equalized across the thickness of each vane.

Abstract: A construct for heating a food product. The construct comprises a first centerline extending in a first direction and a second centerline extending in a second direction, wherein the first centerline is substantially perpendicular to the second centerline, a base, a pair of opposed platforms extending upwardly from the base. The pair of opposed platforms are separated by a recess extending in the second direction. The construct comprises at least one locating feature foldably connected to the construct and being located between the opposed platforms for locating a food product on one of the opposed platforms.

Abstract: A field director assembly includes electrically conductive vanes positioned with respect to each other and to a planar support member to prevent overheating of the susceptor in an unloaded microwave oven.

Abstract: A susceptor includes a flexible substrate and a metallic material provided on at least one surface of the substrate. A first plurality of ventilation apertures are formed in the substrate and the metallic material, and the first plurality of ventilation apertures are configured to permit a fluid to pass through the substrate and the metallic material.