Patents by Inventor Takuhisa Tahara

Takuhisa Tahara 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 system, mobile station, switch apparatus, and communication method
    Patent number: 8140082
    Abstract: A communication system according to the present invention includes: a mobile station 10; an access point located on a radio access system; and a switch apparatus 30 connected to the radio access system, wherein a secured connection between a mobile station 10 and the access point 20 has been already established. The mobile station 10 includes a judgment unit 30 configured to judge whether or not to establish a secured connection between the mobile station 10 and the switch apparatus 30.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: March 20, 2012
    Assignee: NTT DoCoMo, Inc.
    Inventors: Takuhisa Tahara, Akimichi Tanabe, Katsuhiro Noguchi, Shinpei Kawakatsu
  • Communication System, Mobile Station, Switch Apparatus, and Communication Method
    Publication number: 20080305767
    Abstract: A communication system according to the present invention includes: a mobile station 10; an access point located on a radio access system; and a switch apparatus 30 connected to the radio access system, wherein a secured connection between a mobile station 10 and the access point 20 has been already established. The mobile station 10 includes a judgment unit 30 configured to judge whether or not to establish a secured connection between the mobile station 10 and the switch apparatus 30.
    Type: Application
    Filed: November 1, 2006
    Publication date: December 11, 2008
    Applicant: NTT DoCoMo, Inc.
    Inventors: Takuhisa Tahara, Akimichi Tanabe, Katsuhiro Noguchi, Shinpei Kawakatsu