Patents by Inventor Rieko Nozaki

Rieko Nozaki 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 circuit for changing electrical characteristics
    Patent number: 5966335
    Abstract: In a semiconductor memory device, a characteristic changing circuit is connected with a signal line for transmitting an output control signal. If a fuse is normally blown, a fuse is blown together with a fuse for redundant replacement, and otherwise both fuses are not blown. If the fuse blowing is defective, the potential of a signal line is brought to a ground potential level based on a wafer test control signal. As a result, the output control signal is fixed at an L level, and the potential of a data input/output terminal is brought to a high impedance state.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: October 12, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Rieko Nozaki