Patents by Inventor Syuji Mabuchi

Syuji Mabuchi 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 memory device and control method thereof
    Patent number: 7663923
    Abstract: This invention provides a semiconductor memory device in which standby current is suppressed to a small level. A ROM device includes memory cells for reading data corresponding to impedance between a terminal connected to bit lines and a source terminal and source power lines connected to the source terminal. In this ROM device, bias voltage is applied between the terminals of selected memory cells.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: February 16, 2010
    Assignee: Fujitsu Microelectronics Limited
    Inventor: Syuji Mabuchi
  • Semiconductor memory device and control method thereof
    Publication number: 20070195574
    Abstract: This invention provides a semiconductor memory device in which standby current is suppressed to a small level. A ROM device includes memory cells for reading data corresponding to impedance between a terminal connected to bit lines and a source terminal and source power lines connected to the source terminal. In this ROM device, bias voltage is applied between the terminals of selected memory cells.
    Type: Application
    Filed: May 23, 2006
    Publication date: August 23, 2007
    Inventor: Syuji Mabuchi