Patents by Inventor Hisawo Itow

Hisawo Itow 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).

  • Alloy for use in a radioactive ray environment and reactor core members
    Patent number: 4560407
    Abstract: An alloy for use in an environment exposed to neutron rays consists principally of Cr-Ni austenite stainless steel containing nitrogen in an amount exceeding the amount of an impurity and having principally an austenite structure. The alloy is used for reactor core members such as a core shroud, core supporters, control rods, etc. which are exposed to the neutron radiation but prevented from being embrittled by the radiation.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: December 24, 1985
    Assignee: Hitachi, Ltd.
    Inventors: Toshimi Yoshida, Kiyotomo Nakata, Isao Masaoka, Hisawo Itow