Patents by Inventor Naoki Sumita

Naoki Sumita 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).

  • Wireless communication system including a server device and multiple relay devices
    Patent number: 8005423
    Abstract: A communication system includes: a plurality of mobile communication terminals; a server device; and a plurality of relay devices performing a relay between the plurality of mobile communication terminals and the server device. The mobile communication terminals include: a communication unit transmitting and receiving a long wave wirelessly, and a processing unit performing a predetermined process based on received information.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: August 23, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Naoki Sumita, Kiyoshi Takei, Masamichi Izumida
  • COMMUNICATION SYSTEM AND MOBILE COMMUNICATION TERMINAL
    Publication number: 20080171511
    Abstract: A communication system includes: a plurality of mobile communication terminals; a server device; and a plurality of relay devices performing a relay between the plurality of mobile communication terminals and the server device. The mobile communication terminals include: a communication unit transmitting and receiving a long wave wirelessly, and a processing unit performing a predetermined process based on received information.
    Type: Application
    Filed: January 9, 2008
    Publication date: July 17, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Naoki SUMITA, Kiyoshi TAKEI, Masamichi IZUMIDA