Patents by Inventor Masaru Ohsaki

Masaru Ohsaki 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).

  • Cask and production method of cask, and embedded form
    Patent number: 6625247
    Abstract: A lightweight cask comprises a barrel body which shields gamma rays. A resin which shields neutrons is provided on the periphery of the barrel body. A basket is made of a plurality of square pipes having neutron absorbing ability. There is a cavity inside the barrel body. This cavity is worked to have a shape corresponding to the outer shape of the basket. The square pipes are inserted in this cavity so as to abut against this inner surface. Furthermore, chamfered portions are provided on the outside surface of the barrel body at 90° intervals and space portions are formed between another resin and an outer casing.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: September 23, 2003
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Katsunari Ohsono, Kenji Najima, Masaru Ohsaki, Shinji Ohkame