Patents by Inventor Masakazu Yura

Masakazu Yura 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).

  • Node apparatus and alternative path search method
    Patent number: 9357471
    Abstract: Anode apparatus includes: a receiver configured to receive data from a first node apparatus adjacent to the node apparatus, a transmission source of the data being a second node apparatus; a data generator configured to generate transmission data in which the second node apparatus is specified as a final destination; a transmitter configured to transmit the transmission data to an adjacent node apparatus of the node apparatus other than the first node apparatus; and a decision unit configured to decide that an alternative path for transmitting data via an adjacent node apparatus of the node apparatus other than the first node apparatus does not exist between the node apparatus and the second node apparatus, when the node apparatus receives the transmission data transmitted by the transmitter to all adjacent node apparatuses of the node apparatus other than the first node apparatus.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: May 31, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Masakazu Yura, Tadashige Iwao, Shinichi Yamaguchi, Miyuki Moriyama
  • Data processing apparatus for digital copyrights management
    Patent number: 7549172
    Abstract: Data processing apparatus distributes a public key certificate and information about a private key to a user terminal as activation information separately from a terminal module. In the case where the public key certification is vulnerable, it transmits only the activation information again.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: June 16, 2009
    Assignee: Fujitsu Limited
    Inventors: Takashi Tokutani, Takahisa Hatakeyama, Keishiro Tanaka, Masakazu Yura, Teruyoshi Nagaoka
  • Data processing apparatus for digital copyrights management
    Publication number: 20050185792
    Abstract: Data processing apparatus distributes a public key certificate and information about a private key to a user terminal as activation information separately from a terminal module. In the case where the public key certification is vulnerable, it transmits only the activation information again.
    Type: Application
    Filed: September 20, 2004
    Publication date: August 25, 2005
    Inventors: Takashi Tokutani, Takahisa Hatakeyama, Keishiro Tanaka, Masakazu Yura, Teruyoshi Nagaoka