Patents by Inventor Kenichi Yasaka

Kenichi Yasaka 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: 10062658
    Abstract: A surface of at least one of a connection terminal of an electronic component and a connection terminal of a circuit board is covered with a protection layer made of a AgSn alloy. The connection terminal of the electronic component is soldered to the connection terminal of the circuit board.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: August 28, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Seiki Sakuyama, Toshiya Akamatsu, Nobuhiro Imaizumi, Keisuke Uenishi, Kenichi Yasaka, Toru Sakai
  • Patent number: 10056342
    Abstract: A surface of at least one of a connection terminal of an electronic component and a connection terminal of a circuit board is covered with a protection layer made of a AgSn alloy. The connection terminal of the electronic component is soldered to the connection terminal of the circuit board.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: August 21, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Seiki Sakuyama, Toshiya Akamatsu, Nobuhiro Imaizumi, Keisuke Uenishi, Kenichi Yasaka, Toru Sakai
  • Patent number: 9746326
    Abstract: A driver apparatus includes a vibrator and a drive circuit configured to input a drive signal to the vibrator to vibrate the vibrator. The drive circuit includes an output amplifier configured to output the drive signal to the vibrator based on a monitor signal, a power supply unit configured to supply a power supply voltage, and a power supply voltage controller configured to control the power supply voltage and to supply the controlled power supply voltage to the output amplifies. This driver apparatus can increase amplitude of the vibration of the vibrator, and can increase detection sensitivity to a physical quantity detection apparatus including the driver apparatus.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: August 29, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takeshi Fujii, Takeshi Uemura, Hideaki Fujiura, Yasunobu Tsukio, Kenichi Yasaka
  • Publication number: 20160116287
    Abstract: A driver apparatus includes a vibrator and a drive circuit configured to input a drive signal to the vibrator to vibrate the vibrator. The drive circuit includes an output amplifier configured to output the drive signal to the vibrator based on a monitor signal, a power supply unit configured to supply a power supply voltage, and a power supply voltage controller configured to control the power supply voltage and to supply the controlled power supply voltage to the output amplifies. This driver apparatus can increase amplitude of the vibration of the vibrator, and can increase detection sensitivity to a physical quantity detection apparatus including the driver apparatus.
    Type: Application
    Filed: June 30, 2014
    Publication date: April 28, 2016
    Inventors: TAKESHI FUJII, TAKESHI UEMURA, HIDEAKI FUJIURA, YASUNOBU TSUKIO, KENICHI YASAKA
  • Publication number: 20150311171
    Abstract: A surface of a connection terminal of an electronic component is covered with a protection layer made of a AgSn alloy. The electronic component is soldered to a connection terminal of a circuit board.
    Type: Application
    Filed: July 6, 2015
    Publication date: October 29, 2015
    Applicant: FUJITSU LIMITED
    Inventors: Seiki SAKUYAMA, Toshiya Akamatsu, Nobuhiro Imaizumi, Keisuke Uenishi, Kenichi Yasaka, Toru Sakai