Patents by Inventor Isao NAGASAKI

Isao NAGASAKI 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).

  • Patent number: 8636477
    Abstract: This invention provides a chemical supply system for supplying chemical solution from a chemical tank. The chemical supply system includes a chemical supply pump, a pressure adjuster configured to suction the chemical solution into the pump chamber by setting the pressure of working gas to a suction pressure, a switching controller configured to switch the suction-side opening-closing valve to the open state for starting to fill the pump chamber with the chemical solution, a pressure detector configured to detect at least one of a gas pressure in a space connected to the working chamber and a gas pressure in the working chamber when the suction-side opening-closing valve is switched to the open state and starts an inflow of the chemical solution to the pump chamber, and a suction controller configured to control the suction pressure applied to the working chamber by the pressure adjuster, based on a detection result of the pressure detector.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: January 28, 2014
    Assignee: CKD Corporation
    Inventors: Isao Nagasaki, Akihiro Ito, Tetsuya Toyoda
  • Publication number: 20110240672
    Abstract: This invention provides a chemical supply system for supplying chemical solution from a chemical tank. The chemical supply system includes a chemical supply pump, a pressure adjuster configured to suction the chemical solution into the pump chamber by setting the pressure of working gas to a suction pressure, a switching controller configured to switch the suction-side opening-closing valve to the open state for starting to fill the pump chamber with the chemical solution, a pressure detector configured to detect at least one of a gas pressure in a space connected to the working chamber and a gas pressure in the working chamber when the suction-side opening-closing valve is switched to the open state and starts an inflow of the chemical solution to the pump chamber, and a suction controller configured to control the suction pressure applied to the working chamber by the pressure adjuster, based on a detection result of the pressure detector.
    Type: Application
    Filed: March 22, 2011
    Publication date: October 6, 2011
    Applicant: CKD CORPORATION
    Inventors: Isao NAGASAKI, Akihiro ITO, Tetsuya TOYODA