Patents by Inventor Tatsumi Kumekawa

Tatsumi Kumekawa 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 apparatus
    Patent number: 7968942
    Abstract: The present invention provides a semiconductor apparatus having high reliability with respect to a withstand voltage, leakage characteristics, etc. by disposing a structure of preventing stress occurring by metal wiring from directly acting on a trench relating to the semiconductor apparatus having a trench gate.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: June 28, 2011
    Assignee: Panasonic Corporation
    Inventors: Tatsumi Kumekawa, Mitsuhiro Hamada, Shuji Mizokuchi
  • SEMICONDUCTOR APPARATUS
    Publication number: 20090108344
    Abstract: The present invention provides a semiconductor apparatus having high reliability with respect to a withstand voltage, leakage characteristics, etc. by disposing a structure of preventing stress occurring by metal wiring from directly acting on a trench relating to the semiconductor apparatus having a trench gate.
    Type: Application
    Filed: October 29, 2008
    Publication date: April 30, 2009
    Inventors: Tatsumi KUMEKAWA, Mitsuhiro Hamada, Shuji Mizokuchi