Patents by Inventor Katsunobu Ohtsuki

Katsunobu Ohtsuki 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).

  • Authentication method, terminal device, relay device and authentication server
    Patent number: 7748028
    Abstract: A terminal device in the present invention includes a first authentication information transmitter configured to transmit first authentication information including a user ID to a relay device, a temporary ID storage configured to store a temporary ID issued by an authentication server receiving the first authentication information via the relay device, and a second authentication information transmitter configured to transmit second authentication information including the temporary ID and an authentication server ID for identifying the authentication server to the relay device.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: June 29, 2010
    Assignee: NTT DoCoMo, Inc.
    Inventors: Atsushi Sato, Katsuhiro Noguchi, Hiroshi Aono, Katsunobu Ohtsuki