Patents by Inventor Sadayuki Katsumata

Sadayuki Katsumata 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 unit and wireless network system using the same
    Patent number: 11924736
    Abstract: A wireless communication unit and a wireless network system enable a plurality of wireless communication units to be wirelessly cooperated with a simple structure, can easily realize cooperative operations, and can execute IP packet transfer control without acquiring communication path information from an external network. A relay wireless communication portion that is connectable to an upstream unit (upstream wireless base station portion) that is another upstream wireless communication unit via an upstream inter-unit wireless bearer is provided. A wireless base station portion is connectable to a downstream unit (downstream relay wireless communication portion) that is another downstream wireless communication unit via a downstream inter-unit wireless bearer.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: March 5, 2024
    Assignee: Japan Radio Co., Ltd.
    Inventors: Katsuhiko Sato, Yusuke Egawa, Kunimitsu Arai, Satoshi Maeda, Sadayuki Katsumata
  • WIRELESS COMMUNICATION UNIT AND WIRELESS NETWORK SYSTEM USING THE SAME
    Publication number: 20220232451
    Abstract: A wireless communication unit and a wireless network system enable a plurality of wireless communication units to be wirelessly cooperated with a simple structure, can easily realize cooperative operations, and can execute IP packet transfer control without acquiring communication path information from an external network. A relay wireless communication portion that is connectable to an upstream unit (upstream wireless base station portion) that is another upstream wireless communication unit via an upstream inter-unit wireless bearer is provided. A wireless base station portion is connectable to a downstream unit (downstream relay wireless communication portion) that is another downstream wireless communication unit via a downstream inter-unit wireless bearer.
    Type: Application
    Filed: December 23, 2019
    Publication date: July 21, 2022
    Inventors: Katsuhiko Sato, Yusuke Egawa, Kunimitsu Arai, Satoshi Maeda, Sadayuki Katsumata