Patents by Inventor Mitsuyoshi Hashida

Mitsuyoshi Hashida 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).

  • Portable telephone system
    Patent number: 5838770
    Abstract: Duplicate optical fibers connect between a base station controller and a radio base station for each route. The duplicate optical fiber is connected to each of the radio base stations for each route through a star coupler. The radio base stations are arranged in each of areas so that the radio base stations for different routes are arranged adjacent to each other.
    Type: Grant
    Filed: August 8, 1996
    Date of Patent: November 17, 1998
    Assignees: Hitachi, Ltd., Kokusai Electric Co., Ltd.
    Inventors: Yutaka Fukushima, Tetsuo Takemura, Shinichi Iwaki, Mitsuyoshi Hashida, Masao Wanami, Isao Shimbo, Mitsuhiro Wada, Hirofumi Udaki, Yoshihiro Kondo, Yoshinobu Yamamoto, Arata Nakagoshi, Kouichi Ohta, Hiroshi Kuwahara, Yumiko Watanabe
  • Portable telephone system
    Patent number: 5579370
    Abstract: Duplicate optical fibers connect between a base station controller and a radio base station for each route. The duplicate optical fiber is connected to each of the radio base stations for each route through a star coupler. The radio base stations are arranged in each of areas so that the radio base stations for different routes are arranged adjacent to each other.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: November 26, 1996
    Assignees: Hitachi, Ltd., Kokusai Electric Co., Ltd.
    Inventors: Yutaka Fukushima, Tetsuo Takemura, Shinichi Iwaki, Mitsuyoshi Hashida, Masao Wanami, Isao Shimbo, Mitsuhiro Wada, Hirofumi Udaki, Yoshihiro Kondo, Yoshinobu Yamamoto, Arata Nakagoshi, Kouichi Ohta, Hiroshi Kuwahara, Yumiko Watanabe