Patents by Inventor Toshihiro Shinbo

Toshihiro Shinbo 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).

  • Reflection type magnetooptic sensor head with faraday rotator
    Patent number: 5493222
    Abstract: A reflection type magnetooptic sensor head. The respective structural elements are aligned in the order of a light source, light inputting/outputting path, polarizer, Faraday rotator, and reflecting film. The Faraday rotator is made of a (111) bismuth-substituted iron garnet single crystal film. The Faraday rotator is positioned such that the optical axis of the light incident upon the surface of the Faraday rotator makes an angle of 10 to 70 degrees with an axis normal to the surface of the Faraday rotator. The sensor head may further include two identical rectangular prisms positioned such that the Faraday rotator is sandwiched between the slanting surfaces of the prisms.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: February 20, 1996
    Assignee: Mitsubishi Gas Chemical Company, Ltd.
    Inventors: Kazushi Shirai, Toshihiro Shinbo, Norio Takeda, Mitsuzo Arii
  • Magnetooptic sensor head
    Patent number: 5463316
    Abstract: A reflection type magnetooptic sensor head is disclosed. The respective structural elements are aligned following a light source in the order of a light inputting/outputting path, polarizer, Faraday rotator, and reflecting mirror. The Faraday rotator is made of a (111) bismuth-substituted iron garnet single crystal film having [111] axis at an angle of 5-60 degrees with an axis normal to the film surface. The reflecting mirror is positioned such that a light incident upon the reflecting mirror is substantially normal to the surface of the reflecting mirror.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: October 31, 1995
    Assignee: Mitsubishi Gas Chemical Co., Ltd.
    Inventors: Kazushi Shirai, Toshihiro Shinbo, Norio Takeda, Mitsuzo Arii