Patents by Inventor Yamoto Asakura

Yamoto Asakura 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).

  • Water-cooled direct cycle nuclear power plant
    Patent number: 5015436
    Abstract: A water-cooled direct cycle nuclear plant including a nuclear reactor, a turbine, a condenser, a purifying means and a feed water heater successively arranged as main constitution, further comprises means for measuring iron concentration in cooling water, and means for injection iron into cooling water for controlling iron amount in cooling water at an optimum level. The iron amount to be injected into cooling water is calculated based on the measured iron concentration so as to make the iron accumulation rate on fuel rod to be not less than 0.5 mg/m.sup.2 /hr.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: May 14, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Makoto Nagase, Yamoto Asakura, Motoaki Utamura, Shunsuke Uchida