Patents by Inventor Masanori Fukunaga

Masanori Fukunaga 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).

  • Semiconductor device and method of manufacturing the same
    Patent number: 4971921
    Abstract: The present invention relates to a semiconductor device employed for high power use and a method of manufacturing the same. According to the present invention, a temperature detecting device is formed on the same substrate with a power device. Thus, there is no need to add an external temperature sensor, whereby the device can be reduced in size. Further, an abnormal temperature of the power device is accurately detected by the temperature detecting device, whereby thermal breakdown of the power device is reliably prevented.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: November 20, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masanori Fukunaga, Gourab Majumdar
  • Semiconductor power device integrated with temperature protection means
    Patent number: 4903106
    Abstract: The present invention relates to a semiconductor device employed for high power use and a method of manufacturing the same. According to the present invention, a temperature detecting device is formed on the same substrate with a power device. Thus, there is no need to add an external temperature sensor, whereby the device can be reduced in size. Further, an abnormal temperature of the power device is accurately detected by the temperature detecting device, whereby thermal breakdown of the power device is reliably prevented.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: February 20, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masanori Fukunaga, Gourab Majumdar