Patents by Inventor Kunio Sensui

Kunio Sensui 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).

  • Illegal data use prevention system
    Patent number: 7412601
    Abstract: An illegal data use prevention system includes a registrar which issues first authentication information for a game machine reproducing data and second authentication information for a user-identifying IC card. The data is identified by the first authentication information and the second authentication information. The game machine contains the first authentication information and, for example, executes a game program in accordance with a result of determination as to whether the IC card contains the second authentication information. Thus, illegal use of data is effectively prevented.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: August 12, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshiki Shibata, Kunio Sensui, Kazuhiro Yamamoto
  • Illegal data use prevention system
    Publication number: 20040250093
    Abstract: An illegal data use prevention system includes a registrar which issues first authentication information for a game machine reproducing data and second authentication information for a user-identifying IC card. The data is identified by the first authentication information and the second authentication information. The game machine contains the first authentication information and, for example, executes a game program in accordance with a result of determination as to whether the IC card contains the second authentication information. Thus, illegal use of data is effectively prevented.
    Type: Application
    Filed: May 19, 2004
    Publication date: December 9, 2004
    Inventors: Yoshiki Shibata, Kunio Sensui, Kazuhiro Yamamoto
  • Method of preparing an exhaust port arrangement of a cylinder head
    Patent number: 4148352
    Abstract: A heat insulation layer is provided on the exterior surface of a port liner. The port liner is installed in the exhaust port passage upon casting of a cylinder head by filling a moulding material in the cavity of the port liner to serve as an exhaust port, mounting preformed and cured separate layers of moulding material on the exterior surface of the port liner and using the port liner with a mass of a moulding material therein and separate layers of a moulding material thereon as a core for casting an exhaust port passage and a heat insulation layer of the exhaust port.
    Type: Grant
    Filed: July 15, 1976
    Date of Patent: April 10, 1979
    Assignee: Nissan Motor Company, Limited
    Inventors: Kunio Sensui, Yoshimasa Hayashi
  • Core and method for casting cylinder head with exhaust port
    Patent number: 4077458
    Abstract: A segmented port liner is disposed about a precured inner casting core. Pre-cured casting cores are fixed onto the surface of the liner. If desired, another segmented liner may be disposed thereabout and similarly covered with the pre-cured casting cores. The above combination serves an exhaust passage casting core.
    Type: Grant
    Filed: August 5, 1976
    Date of Patent: March 7, 1978
    Assignee: Nissan Motor Company, Limited
    Inventors: Yoshimasa Hayashi, Kunio Sensui