Patents by Inventor Norifumi Suntou

Norifumi Suntou 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).

  • Switching valve
    Patent number: 10738898
    Abstract: Provided is a switching valve for use in an analyzer module for switching flow passages of fluids, in which the manufacturing cost is reduced and the life is increased. The valve element is provided with a lower contact portion that comes into close contact with a lower valve seat disposed at a valve body when a valve is closed, and with an upper contact portion that comes into close contact with an upper valve seat disposed at a counter plate when the valve is open. The counter plate has a first recess that is open downward and a second recess that is open toward the first recess and has a smaller horizontal cross-sectional area than that of the first recess, and the upper valve seat is press-fitted into the second recess.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: August 11, 2020
    Assignee: FUJIKIN INCORPORATED
    Inventors: Keisuke Ishibashi, Tadayuki Yakushijin, Ryohei Fujimoto, Norifumi Suntou, Michio Yamaji, Yasuhiro Yoshikane
  • SWITCHING VALVE
    Publication number: 20190093774
    Abstract: Provided is a switching valve for use in an analyzer module for switching flow passages of fluids, in which the manufacturing cost is reduced and the life is increased. The valve element is provided with a lower contact portion that comes into close contact with a lower valve seat disposed at a valve body when a valve is closed, and with an upper contact portion that comes into close contact with an upper valve seat disposed at a counter plate when the valve is open. The counter plate has a first recess that is open downward and a second recess that is open toward the first recess and has a smaller horizontal cross-sectional area than that of the first recess, and the upper valve seat is press-fitted into the second recess.
    Type: Application
    Filed: January 30, 2018
    Publication date: March 28, 2019
    Inventors: Keisuke Ishibashi, Tadayuki Yakushijin, Ryohei Fujimoto, Norifumi Suntou, Michio Yamaji, Yasuhiro Yoshikane