Patents by Inventor Wei-Yueh Wu

Wei-Yueh Wu 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).

  • Gate valve assembly
    Patent number: 6837483
    Abstract: A gate valve assembly includes a valve seat and a valve. The valve seat includes a passage opening and a contacting region surrounding the passage opening. The valve includes a groove located on a marginal region of the valve, and a sealing body positioned in the groove. The passage opening is closed by covering the valve over the valve seat, and an upper surface of the sealing body is tightly contacted with the contacting region. Therefore, the valve is prevented from rubbing against the valve seat and producing particles.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: January 4, 2005
    Inventor: Wei-Yueh Wu
  • GATE VALVE ASSEMBLY
    Publication number: 20040089836
    Abstract: A gate valve assembly includes a valve seat and a valve. The valve seat includes a passage opening and a contacting region surrounding the passage opening. The valve includes a groove located on a marginal region of the valve, and a sealing body positioned in the groove. The passage opening is closed by covering the valve over the valve seat, and an upper surface of the sealing body is tightly contacted with the contacting region. Therefore, the valve is prevented from rubbing against the valve seat and producing particles.
    Type: Application
    Filed: March 20, 2003
    Publication date: May 13, 2004
    Inventor: Wei-Yueh Wu