Patents by Inventor Kouei Ozaki

Kouei Ozaki 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).

  • Power supply and LED lamp device
    Patent number: 6577072
    Abstract: An LED lamp device of the invention includes a power supply unit (102, 103) supplied with an alternating-current power supply voltage, and an LED lamp (106) constituted by one or a plurality of serially connected LEDs connected to output terminals of the power supply unit (102, 103). The power supply unit (102) obtains a rectified wave of the alternating-current power supply voltage, admits electric power for only part of a time period in which the voltage of the rectified wave corresponding to each half period of the wave of the alternating-current power supply voltage is higher than or equal to a predetermined value, and uses the electric power as power for lighting the LED lamp (106).
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: June 10, 2003
    Assignee: Takion Co., Ltd.
    Inventors: Yutaka Saito, Kouei Ozaki, Toshiaki Narukawa, Tsutomu Ota
  • Power supply and led lamp device
    Publication number: 20020158590
    Abstract: An LED lamp device of the invention includes a power supply unit (102, 103) supplied with an alternating-current power supply voltage, and an LED lamp (106) constituted by one or a plurality of serially connected LEDs connected to output terminals of the power supply unit (102, 103). The power supply unit (102) obtains a rectified wave of the alternating-current power supply voltage, admits electric power for only part of a time period in which the voltage of the rectified wave corresponding to each half period of the wave of the alternating-current power supply voltage is higher than or equal to a predetermined value, and uses the electric power as power for lighting the LED lamp (106).
    Type: Application
    Filed: July 10, 2001
    Publication date: October 31, 2002
    Inventors: Yutaka Saito, Kouei Ozaki, Toshiaki Narukawa, Tsutomu Ota
  • Electronic apparatus for being switched using piezoelectric element
    Patent number: 5977688
    Abstract: An electronic apparatus that performs switching with the use of a piezoelectric element comprises a piezoelectric element 11, a first monitor electrode 15, and a second monitor electrode 16, the latter two being provided thereon and intended to output electric shock signals that are generated when a shock has been applied to the piezoelectric element 11 to thereby distort it. Whereby, a shock is applied to the electronic apparatus that contains the piezoelectric element 11 and a shock is applied to the built-in piezoelectric element 11. This makes it possible to output for the purpose of controlling the operation of the respective functions an electronic shock signal that is generated when the piezoelectric element 11 is distorted. As a result, it is possible to reduce the number of switch parts for, and hence the size of, the electronic apparatus and reduce the amount of time and labor for performing the switching operation by utilizing the piezoelectric effect of the piezoelectric element.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: November 2, 1999
    Assignee: Seiko Instruments R & D Center Inc.
    Inventors: Fumiyasu Utsunomiya, Yutaka Saitoh, Yoshifumi Yoshida, Kouei Ozaki, Toshiaki Narukawa