Patents Assigned to Yukiyasu Unno
  • Radiation shield
    Patent number: 4587277
    Abstract: A radiation shield superior to lead in absorbing/attenuating X-rays and the like made by molding with a resin binder a mixture of powders, namely lead oxide derived from scrap storage batteries, slag derived from electrorefining of aluminum, nickel or chromium as a by-product, and molybdenite. The molded shield may also contain zeolite for gas absorption and a reinforcing core of glass fabric.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: May 6, 1986
    Assignee: Yukiyasu Unno
    Inventor: Shinobu Sato