The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Number | Title | Issue Date |
| 7432482 | Distillation and distillate method by microwaves A microwave energy emitter (108) is positioned in a chamber within a material holding cavity of a containment vessel (106) that is transparent to microwave energy absorption that is further surrounded by a microwave reflective component to reflect the ... | 10/07/2008 |
| 7388179 | Microwave radiating applicator with reduced sensitivity to surrounding media A microwave energy applicator radiating uniformly all around the applicator that maintains high efficiency Voltage Standing Wave Ratio (V.S.W.R.) for surrounding media of dielectric constants varying from about 1 to about 80. In a particular embodiment, the high eff... | 06/17/2008 |
| 7365291 | High voltage input apparatus for magnetron A high voltage input apparatus for a magnetron, in which first protrusions formed on lead conductors are caught by insulators and an insulating case, a ground metal is bonded to the insulating case, and expanded portions formed on the insulators are caught by the in... | 04/29/2008 |
| 7361533 | Stacked embedded leadframe A method of forming a stackable embedded leadframe package includes coupling an electronic component having bond pads to a substrate; coupling on the substrate a leadframe having a plurality of leads, each lead having a lower mounting portion; encapsulating the elec... | 04/22/2008 |
| 7348526 | Microwave-assisted chromatography preparation An instrument and associated method are disclosed for preparing samples for column chromatography. The method includes the steps of applying microwave energy to a sample composition containing at least one solvent to encourage a chemical reaction and generate desire... | 03/25/2008 |
| 7329847 | Combination microwave and impingement heating cooking oven A combination microwave and impingement heating cooking oven, wherein an upper blowing port blowing hot air in vertical direction and a lateral blowing port for blowing hot air in horizontal direction are provided in a cooking chamber, the upper blowing port is prov... | 02/12/2008 |
| 7297909 | Method and apparatus for homogenisation of melt Microwave radiation of frequency 0.1 to 20 GHz, is applied to the melt of viscosity in the range 104 to 101 Pa·s. The outside surface of heated space, where an outlet of the waveguide of microwave radiation is located, can be cooled. The micro... | 11/20/2007 |
| 7282683 | High frequency heating apparatus The present invention provides a high frequency heating apparatus having a structure, which can be mounted/dismounted an air-exhausting grille without any tools. In this apparatus, an air-exhausting grille is arranged by that a fixing claw portion having a bent Z-sh... | 10/16/2007 |
| 7271373 | Microwave oven A microwave oven having a cooking chamber, at least one heat outlet provided in a sidewall of the cooking chamber, at least one heat inlet provided in the center of the sidewall of the cooking chamber, and a convection assembly. The convection assembly is disposed o... | 09/18/2007 |
| 7248129 | Microstrip directional coupler A microwave directional coupler includes a microstrip conductor formed on a dielectric substrate and forming a main transmission line having in and out ports that receive signals to be coupled. A substantially U-shaped microstrip conductor is formed over the dielect... | 07/24/2007 |
| 7230218 | Microwave or radio frequency device including three decoupled generators A microwave or radio frequency device including an applicator for receiving an object to be processed, and a plurality of generators supplying power to the applicator via propagation guides. According to the invention, three propagation guides propagating the microw... | 06/12/2007 |
| 7227109 | Microwave ovens The oven cavity (1) of a microwave oven includes an apertured launch wall (3) on the external side of which a launch box (5) is mounted so as to cover the aperture. Two three or four magnetrons supply microwave energy to the launch box (5... | 06/05/2007 |
| 7226334 | Apparatus for making high buffer gas pressure ceramic arc tube An apparatus for making a ceramic arc tube for high intensity discharge (HID) lighting applications is provided wherein the arc tube contains a high buffer gas pressure and RF induction heating is used to melt a frit material to form a hermetic seal. ... | 06/05/2007 |
| 7208710 | Uniform microwave heating method and apparatus A method and apparatus for creating uniform heating of an microwave absorptive target. A circularly polarized waveguide mode is created that promotes uniform heating of the microwave absorptive target by rotating a propagated non-uniform field pattern around a centr... | 04/24/2007 |
| 7199341 | High-frequency heating apparatus A high-frequency heating apparatus comprises a heating chamber, a high-frequency generator, a waveguide, an antenna, a motor for rotating the antenna, and a stage (6) provided above and near the antenna to partition the heating chamber and made of dielectric.... | 04/03/2007 |
| 7192807 | Wafer level package and fabrication method A method of forming an electronic component package includes coupling a first surface of an electronic component to a first surface of a first dielectric strip, the electronic component comprising bond pads on the first surface; forming first via apertures through t... | 03/20/2007 |
| 7122772 | Microwave resonator and method of operating microwave resonator In an even numbered polygonal microwave resonator wherein a high mode microwave mode is formed and in the resonator volume a homogeneous field distribution is established for the thermal processing of workpieces, a microwave in-coupling structure pair is provided al... | 10/17/2006 |
| 7119312 | Microwave fluid heating and distillation method A microwave energy emitter (108) is positioned in a microwave transparent chamber (123) within a fluid holding vessel (106) of a microwave containment vessel (122). The fluid holding vessel (106) may be transparent to microwave ene... | 10/10/2006 |
| 7091457 | Meta-surface waveguide for uniform microwave heating A method and apparatus for creating uniform heating of an microwave absorptive target. A microwave housing has a longitudinal axis and propagates a waveguide mode at an operating frequency. The target is located in an axial cross-sectional area relative to the longi... | 08/15/2006 |
| 7087872 | Multi-shelved convection microwave oven An oven, is provided that includes multiple heat transfer means, including convection and microwave heat transfer means. The oven includes a cooking chamber, a blower and at least a shelf disposed within the cooking chamber. The shelf is designed to act as a food su... | 08/08/2006 |
| 7067779 | Magnetron arrangement A magnetron arrangement has a coaxial output terminating in a probe which launches energy from the magnetron along a rectangular waveguide. The coaxial output is arranged in an endfire configuration with respect to the waveguide, giving a compact arrangement compare... | 06/27/2006 |
| 7049566 | Cooking device A cooking device includes a first waveguide portion to make a microwave emitted into a heating chamber propagate radially in the directions almost parallel with the bottom face of the heating chamber and to guide the microwave propagated in the almost parallel direc... | 05/23/2006 |
| 7030347 | Microwave oven with mode stirrer A microwave oven, which has a circular polarized wave stirrer for uniformly heating food, is disclosed. The microwave oven includes a magnetron generating electromagnetic waves, a waveguide guiding the electromagnetic waves generated from the magnetron to a cavity, ... | 04/18/2006 |
| 7022954 | Microwave cavity resonator for heating printing substance and/or toner Heating a printing substance and/or toner, in an electrophotographic printer, with a standing microwave formed by at least one cavity resonator, with the printed matter being caused to move through the resonator gap. The power distribution of the microwave applied b... | 04/04/2006 |
| 7019272 | Wall mounted microwave oven having an exhaust ventilation system A wall mounted type microwave oven having an external enclosure including a bottom closure wall which includes a suction opening and a top vent opening and an oven cavity which is supported within the external enclosure. The oven cavity has a rearwardly stepped port... | 03/28/2006 |
| 7012228 | Microwave oven with phase modulator and fan on common driveshaft A microwave oven comprises a magnetron for delivering microwave power to a cavity of the oven, a rotatable phase modular (19) an electrical resistance heating element (12) and a rotatable fan (20) for forcing air over the resistance heating elem... | 03/14/2006 |
| 7012231 | Microwave component heating apparatus A system and method for thermally expanding a product submerged in heating medium located in an internal compartment of a microwave oven. The heating medium is subjected to low doses of micro-radiation in order to become heated and thermally expand the encapsulated ... | 03/14/2006 |
| 7012230 | Microwave oven The present invention relates to a microwave oven. The microwave oven of the present invention comprises a cavity assembly which defines a cooking chamber therein and functions as a framework of the microwave oven, an outer casing which includes a top portion and si... | 03/14/2006 |
| 7002125 | Commercial microwave oven with arranged components for heat dissipation A microwave oven is provided, which includes a main cabinet for enclosing and protecting various components, having air inlet holes, a base frame under the main cabinet having a box form with an opened top and a front part with a plurality of air outlet holes, a bot... | 02/21/2006 |
| 6998590 | Microwave component heating method A system and method for thermally expanding a product submerged in heating medium located in an internal compartment of a microwave oven. The heating medium is subjected to low doses of micro-radiation in order to become heated and thermally expand the encapsulated ... | 02/14/2006 |
| 6982401 | Microwave oven Microwave oven including a cavity for placing food therein, a magnetron for generating a microwave, a waveguide having at least two slots for guiding the microwave from the magnetron to an inside of the cavity, and a stirrer fan rotatably mounted on an inside of the... | 01/03/2006 |
| 6960747 | Microwave applicator system A microwave applicator for heating loads being a waveguide transition between the rectangular TE10 and TE20 modes comprising a TE10 mode section and a TE20 mode section. The location of the load being inside said TE20... | 11/01/2005 |
| 6933482 | Microwave heating apparatus Microwave heating apparatus comprising an elongated dielectric microwave applicator with an axial TM type mode, said dielectric applicator is provided with a load chamber for a load to be heated, said load chamber is located in a centered axial position inside the a... | 08/23/2005 |
| 6917023 | Reaction and temperature control for high power microwave-assisted chemistry techniques A method is disclosed for carrying out microwave assisted chemical reactions. The method includes the steps of placing reactants in a microwave-transparent vessel, placing the vessel and its contents into a microwave cavity, applying microwave radiation within the c... | 07/12/2005 |
| 6909077 | Microwave ovens A microwave oven has an oven cavity in which a launch site for delivering microwave energy into the oven cavity is provided by a hole (6) in a wall (2) of the cavity and a match plate (10). In order to improve the distribution of microwave energ... | 06/21/2005 |
| 6906298 | Magnetron driving circuit board for microwave oven A microwave oven having a magnetron that generates microwaves, a magnetron driving circuit that supplies high voltage power to the magnetron and a machine room that accommodates the magnetron and the magnetron driving circuit. The microwave oven includes a single ma... | 06/14/2005 |
| 6906301 | Mounting structures for a high-frequency heating apparatus A high-frequency heating apparatus includes a magnetron (1), a magnetron holding plate (2), a waveguide (3), a heating chamber (4), and screws (5), and the magnetron (1) is attached to the magnetron holding plate (2) ... | 06/14/2005 |
| 6906297 | Method and device for microwave-heating prepared meals sealed in trays Trays placed in an autoclave are coupled with microwaves from microwave generators and move back and forth as they are processed to ensure even heating. The generators are placed at the side of the autoclave so each generator connects to a wave guide in the autoclav... | 06/14/2005 |
| 6901683 | Method and apparatus for electromagnetic drying of printed media A method, apparatus and article of manufacture for providing electromagnetic drying of printed media. A resonant cavity allows support of standing waves along many radial axes throughout the resonant cavity. The electromagnetic drying unit allows forced air to be in... | 06/07/2005 |
| 6900424 | Microwave delivery system for a cooking appliance A microwave delivery system for a cooking appliance includes a toroidal waveguide, a launching zone and a waveguide cover. The launching zone includes opposing top, bottom and side walls that form a pathway for a microwave energy field to travel from a magnetron thr... | 05/31/2005 |