Patents by Inventor Iasami Aoki

Iasami Aoki 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 having bitlines of common height
    Patent number: 6455368
    Abstract: A semiconductor memory device includes a memory cell region having an array of a plurality of memory cells, and a peripheral circuit region to which a bit line connected to a predetermined number of the memory cells in the memory cell region is extended and connected. The bit line in the memory cell region and the bit line in the peripheral circuit region have substantially the same upper surface height.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: September 24, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Iasami Aoki