Patents by Inventor Tsuyoshi Tachiyama

Tsuyoshi Tachiyama 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).

  • Patent number: 5892263
    Abstract: A complementary metal-oxide-semiconductor device having a semiconductor region of an n conductivity type connected to a high-potential power supply, in which a p-channel MOSFET is formed, and a semiconductor region of a p conductivity type connected to a low-potential power supply, in which an n-channel MOSFET is formed, characterized in that at least one of the following two states, that is, one state in which a source of said p-channel MOSFET is connected to a lower high-potential power supply having a potential lower than that of said high-potential power supply and another state in which a source of said n-channel MOSFET is connected to a higher low-potential power supply having a potential higher than that of said low-potential power supply is realized.
    Type: Grant
    Filed: January 16, 1997
    Date of Patent: April 6, 1999
    Assignee: NEC Corporation
    Inventor: Tsuyoshi Tachiyama
  • Patent number: 5523711
    Abstract: A signal delaying outputting circuit is disclosed which can prevent an excessive increase in dead time at a high temperature without requiring a large chip area. The signal delaying outputting circuit comprises a first invertor circuit driven by an input signal, and a second invertor circuit driven by an output signal of the first invertor circuit. A first auxiliary MOS FET of the same channel type as that of one of two first p- and n-channel MOS FETs of the first invertor circuit is provided in the first converter circuit in an integral continuous relationship with the one MOS FET such that they have separate gates from each other but have a common source or drain.
    Type: Grant
    Filed: December 14, 1994
    Date of Patent: June 4, 1996
    Assignee: NEC Corporation
    Inventor: Tsuyoshi Tachiyama