Patents by Inventor Kinji Yoshioka

Kinji Yoshioka 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).

  • Reverse conducting thyristor with a planar-gate, buried-gate, or recessed-gate structure
    Patent number: 5682044
    Abstract: The present invention provides a reverse conducting (RC) thyristor of a planar-gate structure for low-and-medium power use which is relatively simple in construction because of employing a planar structure for each of thyristor and diode regions, permits simultaneous formation of the both region and have high-speed performance and a RC thyristor of a buried-gate or recessed-gate structure which has a high breakdown voltage by the use of a buried-gate or recessed-gate structure, permits simultaneous formation of thyristor and diode regions and high-speed, high current switching performance, and the RC thyristor of the planar-gate structure has a construction which comprises an SI thyristor or miniaturized GTO of a planar-gate structure in the thyristor region and an SI diode of a planar structure in the diode region, the diode region having at its cathode side a Schottky contact between n emitters or diode cathode shorted region and the thyristor region having at its anode side an SI anode shorted structure fo
    Type: Grant
    Filed: January 19, 1996
    Date of Patent: October 28, 1997
    Assignees: Takashige Tamamushi, Toyo Denki Seizo Kabushiki Kaisha
    Inventors: Takashige Tamamushi, Kimihiro Muraoka, Yoshiaki Ikeda, Keun Sam Lee, Naohiro Shimizu, Masashi Yura, Kinji Yoshioka