Patents by Inventor Hikokazu Okaguchi

Hikokazu Okaguchi 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).

  • Charging system for battery-set
    Patent number: 7285936
    Abstract: An object is to provide a charging system in which a battery can be charged in a fully charged state or close to the fully charged state while preventing performance deterioration of a battery due to heat generated during charge. A charging system 1 for a battery-set of the invention includes a temperature detecting device 15, a charging device 12 and a control device 13 for controlling the charging device 12 based on a battery temperature. The control device 13 carries out a temperature feedback charge with “a quantity function of a temperature” (?T/?t) as a target value (Y). With the system, it is possible to charge the battery in the fully charged state or close to the fully charged state while preventing the performance deterioration of the battery due to the heat generated during the charge.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: October 23, 2007
    Assignee: Tokyo R & D Ltd.
    Inventors: Nobuhito Ohnuma, Masaaki Yoshikawa, Hikokazu Okaguchi