Patents by Inventor Mitue Tukahara

Mitue Tukahara 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).

  • Defect relief decision circuit with dual-fused clocked inverter
    Patent number: 5696723
    Abstract: Disclosed is a defect relief decision circuit which has: a selection circuit for deciding either of a normal memory cell and a redundant memory cell to be used by cutting a fuse; a first programming fuse circuit which is controlled by the output of the selection circuit and to which an address bit of an address signal is input; a plurality of second programming fuse circuits which is controlled by the output of the selection circuit and to which an address bit different from the address bit of the address signal is input; and a logical circuit to which the outputs of the first and second programming fuse circuits are input and which decides to perform a defect relief operation when these coincide.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: December 9, 1997
    Assignee: NEC Corporation
    Inventor: Mitue Tukahara