Patents by Inventor Sizunao Hattori

Sizunao Hattori has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electromagnetic induction heating device
    Patent number: 8299407
    Abstract: Provided is a low cost and highly safe electromagnetic induction heating device capable of uniformly heating an object to be heated. A work coil (26) has a basic coil (28) located at the innermost position, a first coil (30) located at the intermediate position, and a second coil (32) located at the outermost position, the latter two coils being connected in series to the basic coil (28). The first coil (30) and the second coil (32) are connected in parallel to each other. A switching circuit (16) for supplying a high-frequency current is connected to the first coil 30, and a second switching circuit 18 for supplying a high-frequency current is connected to the second coil 32.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: October 30, 2012
    Assignees: Wakoh Denken Kabushiki Kaisha, Hoshizaki Denki Kabushiki Kaisha
    Inventors: Takakazu Hayashi, Sizunao Hattori
  • ELECTROMAGNETIC INDUCTION HEATING DEVICE
    Publication number: 20100258556
    Abstract: Provided is a low cost and highly safe electromagnetic induction heating device capable of uniformly heating an object to be heated. A work coil (26) has a basic coil (28) located at the innermost position, a first coil (30) located at the intermediate position, and a second coil (32) located at the outermost position, the latter two coils being connected in series to the basic coil (28). The first coil (30) and the second coil (32) are connected in parallel to each other. A switching circuit (16) for supplying a high-frequency current is connected to the first coil 30, and a second switching circuit 18 for supplying a high-frequency current is connected to the second coil 32.
    Type: Application
    Filed: November 7, 2008
    Publication date: October 14, 2010
    Inventors: Takakazu Hayashi, Sizunao Hattori