Patents by Inventor Wataru Kitayama

Wataru Kitayama 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 delivery system and portable information terminal
    Patent number: 5740369
    Abstract: A transmitting management apparatus transmits information having an identification number corresponding to a portable information terminal to which information is to be delivered and/or having a sorting code identifying the information. The portable information terminal receiving the transmitted information selectively acquires and stores proper information by referring to the identification number and/or the sorting code of the received information, and displays the proper information on a display means.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: April 14, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Tooru Yokozawa, Hiroshi Shimizu, Wataru Kitayama, Hidefumi Goto, Tadashi Kuwabara, Tomohiro Esaki, Yoshihiro Yamada