Patents by Inventor Takayuki Katou

Takayuki Katou 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).

  • Electromagnetic Wave Absorption Material for Thermoforming
    Publication number: 20090218553
    Abstract: The present invention is to provide an electromagnetic wave absorption (EWA) material for thermoforming having a good formability and high EWA performance. The EWA material for thermoforming contains a EWA particle covered with a thermoplastic resin layer.
    Type: Application
    Filed: September 25, 2006
    Publication date: September 3, 2009
    Applicants: Yazaki Corporation, Nagasaki University National University Corporatio
    Inventors: Shiyuuichi Kimura, Makoto Egashira, Kiyoshi Yagi, Takayuki Katou
  • Method of and apparatus for granting electronic signature, and computer program
    Patent number: 7513411
    Abstract: An apparatus for granting electronic signature to a data includes an identification-data acquiring unit that acquires identification data for identifying an owner of a secret key that is used to create the electronic signature, an authorization-data acquiring unit that acquires authorization data corresponding to the identification data acquired, and a signature-granting determining unit that determines whether to grant the electronic signature to the data based on the authorization data acquired.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: April 7, 2009
    Assignee: Fujitsu Limited
    Inventors: Nobuo Yoshikawa, Seigo Kotani, Takayuki Katou, Nao Ando
  • Method of and apparatus for granting electronic signature, and computer program
    Publication number: 20050061871
    Abstract: An apparatus for granting electronic signature to a data includes an identification-data acquiring unit that acquires identification data for identifying an owner of a secret key that is used to create the electronic signature, an authorization-data acquiring unit that acquires authorization data corresponding to the identification data acquired, and a signature-granting determining unit that determines whether to grant the electronic signature to the data based on the authorization data acquired.
    Type: Application
    Filed: May 12, 2004
    Publication date: March 24, 2005
    Applicant: Fujitsu Limited
    Inventors: Nobuo Yoshikawa, Seigo Kotani, Takayuki Katou, Nao Ando