Patents by Inventor Kosho Oshima

Kosho Oshima 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).

  • High-frequency heating apparatus and cooling system for magnetron-driving power supply utilized in the apparatus
    Patent number: 6677562
    Abstract: This invention provides a high-frequency heating apparatus for heating by using magnetron including an inverter power supply as a magnetron-driving power supply, a cooling fan, and an air guide. The cooling fan is inclined against the vertical direction of the power supply and fitted to the air guide. This structure increases the cooling effect of the power supply. Additionally, the power supply includes temperature sensors provided on semiconductor elements and a controller for controlling the power supply and an operation of the heating apparatus according to the result of the sensors. These sensors avoid breaking down of the power supply caused by overheating.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: January 13, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kosho Oshima, Masato Yamauchi, Hiroshi Sumi, Yukio Abe
  • High-frequency heating apparatus and cooling system for magnetron-driving power supply utilized in the apparatus
    Publication number: 20020153371
    Abstract: This invention provides a high-frequency heating apparatus for heating by using magnetron including an inverter power supply as a magnetron-driving power supply, a cooling fan, and an air guide. The cooling fan is inclined against the vertical direction of the power supply and fitted to the air guide. This structure increases the cooling effect of the power supply. Additionally, the power supply includes temperature sensors provided on semiconductor elements and control means for controlling the power supply and an operation of the heating apparatus according to the result of sensors. These sensors avoid breaking down of the power supply caused of overheating.
    Type: Application
    Filed: March 11, 2002
    Publication date: October 24, 2002
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kosho Oshima, Masato Yamauchi, Hiroshi Sumi, Yukio Abe