Patents by Inventor Hideki Kitahama

Hideki Kitahama 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).

  • Communication control apparatus, firewall apparatus, and data communication method
    Patent number: 8745719
    Abstract: A communication control system 1 according to the present invention is provided with a home agent apparatus 10, a plurality of firewall devices 20-40, and a mobile station 50. When the mobile station 50 is connected, for example, to the firewall device 20, the firewall device 20 receives identification information and a configuration file of the mobile station 50 from the home agent apparatus 10 and constructs a firewall for the mobile station 50, using the configuration file. When the firewall device 20 receives an IP packet, it selects a firewall suitable for the mobile station 50 being a destination of the packet and determines the propriety of passage thereof according to a filtering condition set in this firewall.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: June 3, 2014
    Assignee: NTT DoCoMo, Inc.
    Inventors: Hideki Kitahama, So Ishida
  • COMMUNICATION CONTROL APPARATUS, FIREWALL APPARATUS, AND DATA COMMUNICATION METHOD
    Publication number: 20080107068
    Abstract: A communication control system 1 according to the present invention is provided with a home agent apparatus 10, a plurality of firewall devices 20-40, and a mobile station 50. When the mobile station 50 is connected, for example, to the firewall device 20, the firewall device 20 receives identification information and a configuration file of the mobile station 50 from the home agent apparatus 10 and constructs a firewall for the mobile station 50, using the configuration file. When the firewall device 20 receives an IP packet, it selects a firewall suitable for the mobile station 50 being a destination of the packet and determines the propriety of passage thereof according to a filtering condition set in this firewall.
    Type: Application
    Filed: December 10, 2007
    Publication date: May 8, 2008
    Applicant: NTT DoCoMo, Inc.
    Inventors: Hideki KITAHAMA, So Ishida
  • Communication control apparatus, firewall apparatus, and data communication method
    Publication number: 20040151135
    Abstract: A communication control system 1 according to the present invention is provided with a home agent apparatus 10, a plurality of firewall devices 20-40, and a mobile station 50. When the mobile station 50 is connected, for example, to the firewall device 20, the firewall device 20 receives identification information and a configuration file of the mobile station 50 from the home agent apparatus 10 and constructs a firewall for the mobile station 50, using the configuration file. When the firewall device 20 receives an IP packet, it selects a firewall suitable for the mobile station 50 being a destination of the packet and determines the propriety of passage thereof according to a filtering condition set in this firewall.
    Type: Application
    Filed: November 19, 2003
    Publication date: August 5, 2004
    Applicant: NTT DoCoMo, Inc.
    Inventors: Hideki Kitahama, So Ishida