Patents by Inventor Keiya Sato

Keiya Sato 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).

  • Surface layer ground establishment block, surface layer ground using the same and method for utilizing the same
    Patent number: 5809702
    Abstract: A plate structure block for establishing a surface layer ground is formed integrally with an iron plate on an upper surface of a reinforced concrete member. A lift metal fittings for transporting the block is installed on the block. The surface layer ground establishment block has a large ground bearing pressure and is a portable block. This block is covered on the surface layer ground and establishes the ground for operating a heavy material machinery and/or for maintaining a heavy material member. By operating a mobile heavy crane on the established ground, the working for constructing a plant is carried out. The material for constructing the ground is reused, the shape of the ground site is easily changed, and the dismantling and removal of the ground is simplified.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: September 22, 1998
    Assignees: Hitachi, Ltd., Hitachi Plant Engineering Construction Co., Ltd.
    Inventors: Tadashi Matsuura, Masakazu Nagase, Kouichi Ushiroda, Akinori Tajiri, Sakae Ebata, Naoto Yoshida, Keiya Sato, Tatsuo Makita
  • Surface layer ground establishment block, surface layer ground using the same and method for utilizing the same
    Patent number: 5692343
    Abstract: A plate structure block for establishing a surface layer ground is formed integrally with an iron plate on an upper surface of a reinforced concrete member. A lift metal fittings for transporting the block is installed on the block. The surface layer ground establishment block has a large ground bearing pressure and is a portable block. This block is covered on the surface layer ground and establishes the ground for operating a heavy material machinery and/or for maintaining a heavy material member. By operating a mobile heavy crane on the established ground, the working for constructing a plant is carried out. The material for constructing the ground is reused, the shape of the ground site is easily changed, and the dismantling and removal of the ground is simplified.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: December 2, 1997
    Assignees: Hitachi, Ltd., Hitachi Plant Engineering & Construction Co., Ltd.
    Inventors: Tadashi Matsuura, Masakazu Nagase, Kouichi Ushiroda, Akinori Tajiri, Sakae Ebata, Naoto Yoshida, Keiya Sato, Tatsuo Makita