Patents by Inventor Tetsunori Hisatsune

Tetsunori Hisatsune 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).

  • Method and apparatus for cleaning boiler of power generation plant
    Patent number: 6098573
    Abstract: A method of cleaning a boiler of a power generation plant is performed removing an oil component remaining in an interior of the boiler before a steady operation of the power generation plant. For such cleaning, a surface active agent is used as a cleaning liquid, and a cleaning liquid tank, into which the cleaning liquid is stored, is temporarily located, which is connected to a boiler feed water pipe through a cleaning liquid injection pipe and a cleaning liquid injection pump, by which the cleaning liquid is injected into the boiler feed water pipe in a controlled manner to feed the cleaning liquid into the boiler.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: August 8, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kiyoto Oyagi, Tadashige Inoue, Masaru Amemiya, Tetsunori Hisatsune