Patents by Inventor Toshitaka Shigematsu

Toshitaka Shigematsu 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).

  • Membrane deaerator apparatus
    Patent number: 5584914
    Abstract: The membrane deaerator according to the present invention includes a plurality of membrane deaerator modules and a water sealed vacuum pump connected thereto. These modules are series-connected between a raw water supply line and a deaeration water supply line. A first vacuum pump is connected to a first deaerator module via a deaeration line, and a second vacuum pump is connected to a second deaerator module via the deaeration line. These vacuum pumps are each provided with a seal water supply line which is used to send the raw water introduced from the water supply line thereinto as seal water to each of the first and second vacuum pumps. A discharge line for the second vacuum pump is connected to the deaeration line for the first vacuum pump. In the membrane deaerator thus formed, the deaeration performance is improved greatly, and a deaeration with dissolved oxygen concentration of several PPB can be carried out.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: December 17, 1996
    Assignees: Miura Co., Ltd, Miura Institute of Research & Development Co., Ltd.
    Inventors: Yasutoshi Senoo, Hitoshi Shiraishi, Norio Yasu, Yasuhiro Kawakami, Yukinori Tobisaka, Yasuo Ochi, Yasuhito Mitsukami, Toshitaka Shigematsu, Kazuhiro Tachino, Yasuhiro Miyagama, Kenichiro Takematsu, Nobuaki Yanagihara