Patents by Inventor Yuko Sudo

Yuko Sudo 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
    Patent number: 6025733
    Abstract: A semiconductor memory device includes two subcircuits each including a memory circuit, a semiconductor circuit, and a logical circuit. Connection pads are divided into only two parallel rows located along the outer periphery of the semiconductor memory device. Each of the pads may include a probe region against which a probe is pressed for testing the semiconductor memory circuit, and a wire region to which a wire is connected upon packaging.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: February 15, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tuyoshi Saitoh, Akira Kitaguchi, Masaaki Matsuo, Makoto Hatakenaka, Toshio Nakano, Yuko Sudo
  • Active noise cancelling apparatus
    Patent number: 5499301
    Abstract: An active noise cancelling apparatus for actively controlling noise generated by a compressor, where noise is apt to externally leak from an opening portion of a machine chamber storing the compressor driven by an A.C. power supply.
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: March 12, 1996
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yuko Sudo, Susumu Saruta, Yasuyuki Sekiguchi