Patents by Inventor Hisatada Miyatke

Hisatada Miyatke 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).

  • Memory cell, memory circuit block, data writing method and data reading method
    Patent number: 6842361
    Abstract: An object of the present invention is to provide a memory cell, a memory circuit block, a data writing method, and a data reading method which realize a reduction in the number of metal layers, cost, and the chip size and an increase of production yields and product reliability. A memory cell 12 including a metal line 16 crossing a bit line 14 without contact therewith and a second conductive structure 24 connecting the metal line 16 and a switching element 20 is disclosed. A write driver circuit 26 for driving a write current through the metal line 16 and a ground 28 are connected to the metal line 16 through a switch 30 for selecting the circuit 26 or the ground 28.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: January 11, 2005
    Assignee: International Business Machines Corporation
    Inventors: Hisatada Miyatke, Toshio Sunaga, Kohji Kitamura
  • Memory cell, memory circuit block, data writing method and data reading method
    Publication number: 20030081454
    Abstract: An object of the present invention is to provide a memory cell, a memory circuit block, a data writing method, and a data reading method which realize a reduction in the number of metal layers, cost, and the chip size and an increase of production yields and product reliability. A memory cell 12 including a metal line 16 crossing a bit line 14 without contact therewith and a second conductive structure 24 connecting the metal line 16 and a switching element 20 is disclosed. A write driver circuit 26 for driving a write current through the metal line 16 and a ground 28 are connected to the metal line 16 through a switch 30 for selecting the circuit 26 or the ground 28.
    Type: Application
    Filed: May 28, 2002
    Publication date: May 1, 2003
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hisatada Miyatke, Toshio Sunaga, Kohji Kitamura