Patents by Inventor Kyuichiro Aihara

Kyuichiro Aihara 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).

  • Radio communication device with improved antenna duplexing apparatus
    Patent number: 5768690
    Abstract: A radio communication device that performs time-sharing communication by switching between reception and transmission, comprises a circulator for guiding transmission signals to the antenna and reception signals from the antenna to the reception circuit. The output on the reception circuit side of the circulator is grounded via a terminal circuit which is operated during transmission and turned off during reception.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: June 16, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tatsuya Yamada, Kyuichiro Aihara