Patents by Inventor Ming-Huei Yeh

Ming-Huei Yeh 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).

  • Ball valve with reinforced ball
    Patent number: 5236176
    Abstract: A ball valve includes a hollow ball provided with beehive-shaped reinforcing portion in the hollow ball for enhancing a strength of the hollow ball durable of compression, impact or any external force acting upon the ball for increasing a diameter of the ball but decreasing its weight, thereby being beneficial for making ball valves with larger sizes.
    Type: Grant
    Filed: November 17, 1992
    Date of Patent: August 17, 1993
    Inventor: Ming-Huei Yeh