Patents Examined by Philip H. Leung
  • Patent number: 7423244
    Abstract: A heater for a hob or cooktop having a glass ceramic surface is disclosed, whereby a number of individual modules with induction coils are provided with converters and a converter control for each induction coil. The modules may be independently assembler and/or replaced, and are arranged close together beneath the glass ceramic hob and electrically connected to a busbar. Each module may be controlled separately. A heated surface of using various combinations of modules can thus be achieved.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: September 9, 2008
    Assignee: E.G.O. Elektro-Geraetebau GmbH
    Inventors: Martin Baier, Lutz Ose
  • Patent number: 7414230
    Abstract: Various blanks are provided for forming sleeves, containers, and other constructs for heating, browning, and/or crisping of a food item in a microwave oven, and for holding and/or transporting the food item after heating. The various blanks, sleeves, containers, and other constructs include a removable portion defined by one or more lines of disruption that enable the removable portion to be separated from the remainder of the blank, sleeve, container, or other construct.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: August 19, 2008
    Assignee: Graphic Packaging International, Inc.
    Inventor: Kelly R. Fitzwater
  • Patent number: 7411164
    Abstract: An image fixing device inductively injects thermal energy into a rotating printing form of a press for fixing an image formed on the rotating printing form by means of a digital imaging system. The fixing device has at least one inductor with at least one induction loop, a high-frequency part that forms a tuned circuit with the inductor, and a supply part that can be coupled to the inductor by means of supply lines suitable for high frequency. The inductor loop is in an elongated form aligned parallel to the circumferential direction of the rotating printing form, with the effect that the zone of energy transfer and therefore the heating zone can be configured specifically in terms of its spread in the printing form, so that a high flux density can be introduced zonally into the printing form at the point which is to be heated.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: August 12, 2008
    Assignee: MAN Roland Druckmaschinen AG
    Inventors: Michael Wagner, Thomas Kothmayr, Franz Peter Weissgärber, Johann Dieter Bierl
  • Patent number: 7405382
    Abstract: According to the present invention, a microwave generator includes a variable voltage provided from a first transformer to a second transformer having a secondary winding split into a filament winding cathode low AC signal and a secondary winding providing a high voltage which is doubled and rectified in a half-wave voltage doubler for providing a pulsed DC signal through a ballast resistor to a magnetron anode responsive to an electromagnetic field. In still further accord with the present invention, a microwave sample cavity includes a waveguide, and a hole for receiving a sample to be microwave-heated, and an inductive tuning post all on a straight line, wherein the hole is adjacent the waveguide and the post is distant from the waveguide.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: July 29, 2008
    Inventor: Wayne Openlander
  • Patent number: 7405381
    Abstract: An instrument and associated method are disclosed for conducting microwave assisted chemical reactions. The instrument includes a microwave cavity, preferably a closed microwave cavity, for conducting microwave assisted chemical reactions, and a source for applying microwave radiation within the cavity and to a vessel and its contents. The instrument also includes an illumination source for illuminating the vessel and its contents, as well as a camera or spectrometer for visually observing the vessel and its contents, an infrared detector for monitoring the temperature of the vessel and its contents, and a filter for preventing the illumination source from saturating the infrared detector, thereby enabling concurrent visual observation and infrared monitoring.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: July 29, 2008
    Assignee: CEM, Corporation
    Inventor: Edward Earl King
  • Patent number: 7402784
    Abstract: A microwave cooker comprises a body having a cooking chamber therein, the cooking chamber having one opened side, a microwave source disposed at the body for supplying microwave to the cooking chamber, a door coupled to the body for opening and closing the cooking chamber, and a multi-stage choke seal formed at the door, having different resonant frequencies at a frequency region higher than a central frequency of microwave, and having different LC resonant circuits for preventing the microwave from being leaked between the body and the door.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: July 22, 2008
    Assignee: LG Electronics Inc.
    Inventors: Sung-Hun Sim, Eung-Su Kim, Jin-Yul Hu
  • Patent number: 7402782
    Abstract: A heat treatment device for baking a chemically amplified resist film formed on a substrate after exposure but before development includes a table that supports the substrate, a heater that heats the substrate, a magnetic field generating unit that generates a magnetic field of lines of magnetic flux directed in a film thickness direction of the resist film and reverses the direction of the lines of magnetic flux, and a controller unit that controls the magnetic field generating unit to generate the magnetic field acting on the resist film at least while the substrate is being heated by the heater unit.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: July 22, 2008
    Assignee: Tokyo Electron Limited
    Inventor: Hiroyuki Iwaki
  • Patent number: 7390995
    Abstract: An image forming apparatus includes a fixing device which fixes a toner image on a recording medium. The fixing device includes a heating device. The heating device includes a heat-generating member, an exciting member, and a changing device. The heat-generating member is subjected to electromagnetic induction heating. The exciting member is placed to sandwich a front surface and a rear surface of the heat-generating member, without contacting the heat-generating member. The changing device changes an opposing distance of the exciting member to at least one of the front surface and the rear surface of the heat-generating member.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: June 24, 2008
    Assignee: Ricoh Company, Limited
    Inventors: Motokazu Hasegawa, Norihiko Aze
  • Patent number: 7390994
    Abstract: An electric cooker having a composite heat source includes an external case having an air inlet and an air outlet, a cooking plate mounted on an upper surface of the external case to be a top plate thereof, a heat generating unit mounted between the external case and the cooking plate, the heat generating unit including a work coil and an electric heater and arranged coaxially with the air inlet with respect to a center of the air inlet, a cooling unit coaxially arranged with respect to the center of the air inlet between the air inlet and the heat generating unit, the cooling unit cooling the heat generating unit, an air duct provided below the heat generating unit, and a reflector forming an outer cover of the electric heater.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: June 24, 2008
    Assignee: LG Electronics Inc.
    Inventors: Doo Yong Oh, Seung Jo Baek, Byeong Wook Park, Seung hee Ryu
  • Patent number: 7388180
    Abstract: A microwave oven includes a cooking chamber; a magnetron for generating a microwave; a waveguide for guiding the microwave from the magnetron toward the cooking chamber; an antenna between the cooking chamber and the waveguide for propagating the microwave guided by the waveguide into the cooking chamber; and a driving unit for moving the antenna along a first direction and rotating the antenna.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: June 17, 2008
    Assignee: LG Electronics Inc.
    Inventors: Eung Su Kim, Kwang Yong Kim, Young Min Lee
  • Patent number: 7388179
    Abstract: 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 efficiency V.S.W.R. is less than about 1.3:1. The applicator can include a circular polarizer connectable to a dielectric waveguide radiator. The radiator can be substantially solid and include a substantially circular outer cross-section that tapers to an end. In one embodiment, the radiator includes a conical void formed in a dielectric entry section.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: June 17, 2008
    Assignee: The Ferrite Company, Inc.
    Inventors: William J. Alton, Lester C. Nelson
  • Patent number: 7388178
    Abstract: An induction heating system for the manufacturing of optical memory microstructure, wherein the thermal cycle allows the process web to be rapidly heated to the relaxation and re-flow temperature, followed by cooling to the optimum separation temperature in under 10 seconds total process time. The rapid response heating system of the present invention may be achieved through the use of one or rotating asymmetrical induction heating coils which are embedded in the platen(s) of the embossing device.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: June 17, 2008
    Assignee: Energy Conversion Devices, Inc.
    Inventor: Michael Hennessey
  • Patent number: 7385162
    Abstract: A heater unit comprises: a hot wire heating unit; an induction heating unit provided adjacent to the hot wire heating unit and operated by induction heating; and connectors each for connecting the hot wire heating unit to the induction heating unit. A cooker comprises: a casing; a heating plate provided on an upper surface of the casing; a hot wire heating unit provided on a bottom surface of the heating plate for generating heat according to application of an electric power; an induction heating unit provided on the bottom surface of the heating plate for being adjacent to the hot wire heating unit and operated by induction heating; connectors each for connecting the hot wire heating unit to the induction heating unit; and support members each provided on the bottom surface of the hot wire heating unit and for supporting the hot wire heating unit.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: June 10, 2008
    Assignee: LG Electronics Inc.
    Inventors: Seung hee Ryu, Jong Gwan Ryu, Eui Sung Kim, Doo Yong Oh, Byeong Wook Park
  • Patent number: 7385164
    Abstract: A revolving base of microwave oven, including an upper chassis, a nether chassis movably located under the upper chassis, an upper distribution box locating on the bottom of the upper chassis, a nether distribution box locating on a top side of the nether chassis, idler wheel groups cooperating between the upper chassis and the nether chassis; the upper chassis, the upper distribution box, the nether distribution box and the nether chassis axially locate through a screw; a smaller conducting ring and a bigger conducting ring are embedded in the bottom of the upper distribution box, the smaller conducting ring and the bigger conducting ring center on the screw, the smaller conducting ring and the bigger conducting ring respectively have electrical union joints drilling through upwards the upper distribution box; a smaller conducting strip and a bigger conducting strip are embedded in the top side of the nether distribution box.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: June 10, 2008
    Assignee: Tsann Kuen (China) Enterprise Co., Ltd.
    Inventor: Aiguo Sun
  • Patent number: 7381932
    Abstract: A quasi-optical material treatment apparatus includes a first mirror and a second mirror. The first mirror is arched, and has a focal point in a chamber distance, and a coupling port to receive a high power microwave from an external microwave source that travels along the chamber distance to output a strong field microwave beam. The second mirror and the first mirror jointly form a quasi-optical action chamber and are movable relative to each other to adjust the total chamber distance between the two. A material to be treated may be moved through a focusing zone (about one wavelength of the strong field microwave beam) of the strong field microwave beam to be treated rapidly and evenly.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: June 3, 2008
    Assignee: Industrial Technology Research Institute
    Inventors: Larry Roger Barnett, Kwo Ray Chu, Tsun-Hsu Chang, Hung-I Chang, Wei-Yuan Chiang, Ching-Fang Yu, Ling-Chieh Tai, Syh-Yuh Cheng, Chwung-Shan Kou
  • Patent number: 7381933
    Abstract: A probe for detecting at least one parameter during thermal treatment of a food product comprises a sensor arrangement suitable for detecting a value of said at least one parameter, at least one antenna for communicating said value to a control device for controlling said thermal treatment in the absence of connection cables, and a supply arrangement of a different type from the electrochemical type.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: June 3, 2008
    Assignee: Angelo Po Grandi Cucine -- Societa' per Azioni
    Inventor: Corrado Cristiani
  • Patent number: 7378623
    Abstract: A dual wall cookware article is formed by bonding a ferromagnetic metal base plate to an assembly that includes an inner vessel, a thermally conductive layer and an outer vessel frame. The outer vessel frame has upright walls that surround a bottom having plural perforations. The bonding process causes the softer thermally conductive material to flow through the perforations and bond ferromagnetic metal base to the outer vessel frame and the inner vessel.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: May 27, 2008
    Assignee: Meyer Intellectual Properties Limited
    Inventor: Roberto Tarenga
  • Patent number: 7375309
    Abstract: A microwave heating system utilizes a microwave energy generator to provide microwave energy through wave guides to targets. The targets are microwave absorbers and thereby increasing temperature upon the contact of microwave energy. The heated targets then transfer heat to an area to be heated such as by conduction, convection or radiation depending on the particular embodiment. A sensor in the area to be heated provides an input to a controller for controlling the input of microwave energy to be directed to the target.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: May 20, 2008
    Assignee: Ag-Way Technologies, LLC
    Inventors: M. Stan Morrow, Gene E. Williams, Michael D. Williams, Jacob H. Williams
  • Patent number: 7375310
    Abstract: An air flow system in oven is provided. The structure includes: a cavity for housing food; a ventilation fan provided at an electronic equipment chamber outside of the cavity; a first intake port provided at a front and upper surface of the microwave oven; a lower barrier for partitioning a lower space of the cavity; an outlet duct provided at one side of the lower barrier, for allowing a flow of hot air using the ventilation fan; an outlet space provided at the other side of the lower barrier, for exhausting an internal air of the cavity; a plurality of front outlet ports provided at a front and lower surface of the microwave oven, for exhausting hot air of the outlet duct and the outlet space; and a communication port provided at one side of the lower barrier, for communicating the outlet duct with the outlet space.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: May 20, 2008
    Assignee: LG Electronics, Inc.
    Inventors: Gyu Ho Oh, Young Chul Kim
  • Patent number: 7372008
    Abstract: An image heating apparatus has a magnetic flux generator; a heat generating element for generating heat by a magnetic flux generated by the magnetic flux generator, the heat generating element being effective to heat an image on a recording material; an electric power supply for supplying electric power to the magnetic flux generator; electric power changing unit for changing electric power to be supplied to the magnetic flux generator on the basis of a temperature rise property of the heat generating element, in a period from start of electric power supply to the magnetic flux generator to reaching of a temperature of the heat generating element to a predetermined level.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: May 13, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoichiro Ohta, Manabu Yamauchi, Hiroto Nishihara, Kenji Fukushi, Yasuyuki Aiko, Hidehiko Kinoshita, Takamitsu Hirayama