Patents by Inventor Yutaka Tateyama

Yutaka Tateyama 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).

  • Ion eluting unit and device loaded with same
    Patent number: 8448479
    Abstract: In an ion elution unit, a drive circuit applies a voltage between electrodes to elute metal ions from the electrodes. Polarities of the electrodes are reversed cyclically with a voltage application halt period placed in-between. A current detection circuit detects the current flowing between the electrodes. A check of operation of the current detection circuit is carried out before the application of a voltage to the electrodes is started. The operation of the current detection circuit is started when a predetermined period of time passes after the application of a voltage to the electrodes is started.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: May 28, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hirokazu Ooe, Yutaka Tateyama, Toshihiro Kamii
  • Ion eluting unit and device loaded with same
    Publication number: 20060164093
    Abstract: In an ion elution unit, a drive circuit applies a voltage between electrodes to elute metal ions from the electrodes. Polarities of the electrodes are reversed cyclically with a voltage application halt period placed in-between. A current detection circuit detects the current flowing between the electrodes. A check of operation of the current detection circuit is carried out before the application of a voltage to the electrodes is started. The operation of the current detection circuit is started when a predetermined period of time passes after the application of a voltage to the electrodes is started.
    Type: Application
    Filed: November 10, 2003
    Publication date: July 27, 2006
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hirokazu Ooe, Yutaka Tateyama, Toshihiro Kami