Patents by Inventor Ping-Song Kuo

Ping-Song Kuo 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).

  • Stop-check valve
    Patent number: 4887792
    Abstract: A stop-check valve includes inside a valve body a swing check valve disc and a contacting projection. A vertically mounted valve rod provided with a handwheel and having at the lower end a structure of a cylindrical contact portion is further included. The contact portion is vertically movable in coupling arrangement with the valve rod and capable of contacting with the contacting projection on the valve disc.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: December 19, 1989
    Inventor: Ping-Song Kuo