Patents by Inventor Hideo Suematsu

Hideo Suematsu 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).

  • Apparatus for manufacturing ultra-pure water
    Patent number: 5250183
    Abstract: The present invention provides an apparatus for manufacturing ultra-pure water, characterized in that a decarbonator/degassor and a reverse osmosis equipment for pretreatment of supply water are installed in the upper stream of a multiple effect evaporator. The present invention also provides a method for manufacturing ultra-pure water, characterized in that most of the carbonic groups dissolved in the supply water is degassed by a decarbonating/degassing treatment prior to introducing the water to the multiple effect evaporator, and that most of the scale components such as Ca.sup.++, SO.sub.4.sup.-- and Mg.sup.++ are also eliminated by a reverse osmosis treatment.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: October 5, 1993
    Assignee: Hitachi Zosen Corporation
    Inventors: Hidetaka Sawada, Shoichi Momose, Shiro Inoue, Hideo Suematsu, Kazunori Koba