Patents by Inventor Hiroji Kusaka

Hiroji Kusaka 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).

  • Spread spectrum communications system
    Patent number: 4879726
    Abstract: In a spread communications systems, a filter is inserted in a transmitter and a receiver, respectively. The filter in the transmitter is an FIR filter and the filter in the receiver has a characteristic inverse to that of the FIR filter.
    Type: Grant
    Filed: October 6, 1987
    Date of Patent: November 7, 1989
    Assignees: Oki Electric Industry Co., Ltd., Hiroji Kusaka
    Inventors: Masaki Kobayashi, Yoshio Itoh, Hiroji Kusaka