Patents by Inventor Atsumi Tokumasu

Atsumi Tokumasu 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).

  • Electronic bankbook, and processing system for financial transaction information using electronic bankbook
    Patent number: 6182891
    Abstract: The object of the present invention is to propose an account bankbook, a money transfer card, a receipt file, and a checkbook utilizing an optical card, an IC card, or a hybrid optical/IC card. On the surface of a resin card base board 1 are formed an IC chip 11, an optical recording sheet 13, a magnetic stripe 14, and an embossment 12. In a semiconductor memory within the IC chip 11 are written validation keys, search keys, payee information, the upper limit amount of a check, and a program for processing transaction data. Access restrictions corresponding to various applications are imposed upon these data. The history of various cash transactions is recorded in the optical recording sheet 13. These records are of write-once type and rewriting or deletion thereof is impossible.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: February 6, 2001
    Assignee: NTT Data Communications Systems Corporation
    Inventors: Nobuo Furuhashi, Kenichiro Inoue, Tomoo Takeda, Sigefumi Takahashi, Atsumi Tokumasu, Takafumi Kobayashi, Noriyuki Iwase
  • Electronic bankbook and processing system for financial transaction information using electronic bankbook
    Patent number: 6029887
    Abstract: The object of the present invention is to propose an account bankbook, a money transfer card, a receipt file, and a checkbook utilizing an optical card, an IC card, or a hybrid optical/IC card. On the surface of a resin card base board 1 are formed an IC chip 11, an optical recording sheet 13, a magnetic stripe 14, and an embossment 12. In a semiconductor memory within the IC chip 11 are written validation keys, search keys, payee information, the upper limit amount of a check, and a program for processing transaction data. Access restrictions corresponding to various applications are imposed upon these data. The history of various cash transactions is recorded in the optical recording sheet 13. These records are of write-once type and rewriting or deletion thereof is impossible.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: February 29, 2000
    Assignee: NTT Data Communications Systems Corporation
    Inventors: Nobuo Furuhashi, Kenichiro Inoue, Tomoo Takeda, Sigefumi Takahashi, Atsumi Tokumasu, Takafumi Kobayashi, Noriyuki Iwase