Patents by Inventor Kazuyuki Yazumi

Kazuyuki Yazumi 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: 6321980
    Abstract: In an electronic money storing apparatus in an electronic money transaction system for transmitting and receiving electronic money between electronic money cards holding electronic money, IC cards are loaded to each of a plurality of IC card read/write unit connected to a controller. Each of the IC cards holds electronic money and transmits and receives electronic money with another IC card in the electronic money transaction system. The controller reads and writes the electronic money of the IC cards loaded to a selected IC card read/write unit and transmits and receives the electronic money between that IC card and an electronic money storing media external of the electronic money storing apparatus.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: November 27, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Kazuyuki Yazumi, Manabu Hayashi, Hitoshi Maekawa
  • Patent number: 6109523
    Abstract: An electronic money coffer with an improved safety relative to an abnormal state such as fire. The electronic money coffer is provided with a depository unit having a structure resistant to an abnormal state. The depository unit accommodates the optional number of electronic money storing media such as IC cards excepting those electronic money storing media used in ordinary electronic money dealing. When a sensor detects an abnormal state such as abnormal temperature and smoke caused by a fire or the like, the values of electronic money in the electronic money storing media used in ordinary electronic money dealing are transferred to the electronic money storing media in the depository unit. The electronic money coffer can maintain by itself the safety of electronic money when a fire or the like occurs. The assets in an electronic money dealing system can be safely and reliably managed by the electronic money coffer which is compact and cost effective.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: August 29, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Hitoshi Maekawa, Kazuyuki Yazumi, Manabu Hayashi
  • Patent number: 6032858
    Abstract: In an electronic money storing apparatus in an electronic money transaction system for transmitting and receiving electronic money between electronic money cards holding electronic money, IC cards are loaded to each of a plurality of IC card read/write unit connected to a controller. Each of the IC cards holds electronic money and transmits and receives electronic money with another IC card in the electronic money transaction system. The controller reads and writes the electronic money of the IC cards loaded to a selected IC card read/write unit and transmits and receives the electronic money between that IC card and an electronic money storing media the external of the electronic money storing apparatus.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: March 7, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Kazuyuki Yazumi, Manabu Hayashi, Hitoshi Maekawa