Patents by Inventor Hitoaki Sakamoto

Hitoaki Sakamoto 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).

  • Information distribution device selection system
    Patent number: 6212570
    Abstract: An information distribution device selection system capable of selecting one information distribution device that is logically closest from the user communication terminal among a plurality of information distribution devices on inter-connected communication networks is disclosed.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: April 3, 2001
    Assignee: Nippon Telegraph & Telephone Corporation
    Inventors: Katsuyuki Hasebe, Shin Miyakawa, Hitoaki Sakamoto, Isao Iwasa, Toyonori Fujiura, Takayuki Nakao