Patents by Inventor Kaoru Ozaki

Kaoru 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).

  • Publication number: 20210297078
    Abstract: A semiconductor device includes a first terminal, a second terminal, a first transistor, and a switching circuitry. In the first transistor, an anode of a body diode is connected to the first terminal, and a cathode of the body diode is connected to the second terminal. The switching circuitry is connected between a gate and a source of the first transistor, and switches a connection state between the gate and the source of the first transistor.
    Type: Application
    Filed: September 15, 2020
    Publication date: September 23, 2021
    Inventor: Kaoru OZAKI
  • Patent number: 11128295
    Abstract: A semiconductor device includes a first terminal, a second terminal, a first transistor, and a switching circuitry. In the first transistor, an anode of a body diode is connected to the first terminal, and a cathode of the body diode is connected to the second terminal. The switching circuitry is connected between a gate and a source of the first transistor, and switches a connection state between the gate and the source of the first transistor.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: September 21, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventor: Kaoru Ozaki
  • Patent number: 7675275
    Abstract: According to an aspect of the present invention, there is provided a DC-DC converter including a high-side transistor, a low-side transistor, a first current detector, a second current detector and a driver. The first current detector monitors a first current flowing through the high-side transistor and outputs a first control signal when the first current becomes smaller than a first reference value. The second current detector monitors a second current flowing through the low-side transistor and outputs a second control signal when the second current becomes smaller than a second reference value. The driver turns on the low-side transistor based on the first control signal and turns on the high-side transistor based on the second control signal.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: March 9, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Luo Ruobiao, Kaoru Ozaki
  • Publication number: 20100026259
    Abstract: A DC-DC converter integrated circuit includes: a switching terminal; a feedback terminal; a high-side transistor operable to output a voltage through the switching terminal in ON state; a voltage sensor operable to compare voltage at the switching terminal with a first reference voltage; an error amplifier operable to generate an error signal from voltage at the feedback terminal and a second reference voltage; and a control circuit on detecting the voltage at the switching terminal higher than the first reference voltage in OFF state of the high-side transistor using the voltage sensor, operable to make the high-side transistor turn off in a next period after detecting the voltage at the feedback terminal higher than the second reference voltage using the error signal, and turn on in a next period after detecting the voltage at the feedback terminal lower than the second reference voltage using the error signal.
    Type: Application
    Filed: July 27, 2009
    Publication date: February 4, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kaoru Ozaki, Yuichi Goto
  • Publication number: 20080088283
    Abstract: According to an aspect of the present invention, there is provided a DC-DC converter including a high-side transistor, a low-side transistor, a first current detector, a second current detector and a driver. The first current detector monitors a first current flowing through the high-side transistor and outputs a first control signal when the first current becomes smaller than a first reference value. The second current detector monitors a second current flowing through the low-side transistor and outputs a second control signal when the second current becomes smaller than a second reference value. The driver turns on the low-side transistor based on the first control signal and turns on the high-side transistor based on the second control signal.
    Type: Application
    Filed: October 10, 2007
    Publication date: April 17, 2008
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Luo Ruobiao, Kaoru Ozaki
  • Patent number: 4042667
    Abstract: In a method of cleaning a fluorine-containing waste gas evolved frm a furnace, by contacting said gas with a fluorine-reactive powder and filtering the fluorine-reactive powder by a filter, an improvement comprising cooling the waste gas to 150.degree.-400.degree. C; feeding a fluorine-reactive powder into the cooled waste gas; passing the cooled waste gas through a filter on which the fluorine-reactive powder is deposited so as to react with the fluorine component of the waste gas; and removing the deposited powder layer from the filter.
    Type: Grant
    Filed: April 17, 1975
    Date of Patent: August 16, 1977
    Assignee: Asahi Fiber Glass Company Limited
    Inventors: Shosuke Ishiwata, Kaoru Ozaki