Patents by Inventor Tooru Sakuragawa

Tooru Sakuragawa 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).

  • Antenna diversity switching device with switching circuits between the receiver terminal and each antenna
    Patent number: 5594394
    Abstract: An antenna switching device of the present invention includes: a transmitting terminal for receiving a transmitting signal; a first antenna terminal connected to a first antenna; a second antenna terminal connected to a second antenna; a receiving terminal for outputting receiving signals received at the first antenna terminal and the second antenna terminal; a selecting unit for selecting one mode among a first mode for outputting a signal corresponding to the transmitting signal to the first antenna terminal, a second mode for outputting the receiving signal received at the first antenna to the receiving terminal, and a third mode for outputting the receiving signal received at the second antenna to the receiving terminal.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: January 14, 1997
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Atsushi Sasaki, Toshio Ishizaki, Hiroshi Takahashi, Tooru Sakuragawa, Hideaki Nakakubo, Ikuo Ohta, Tsutomu Matsumura, Hiroaki Kosugi, Naoki Yuda, Youichi Morinaga