Patents by Inventor J. J. Wei

J. J. Wei 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).

  • Structure of a ball valve especially used in food processing
    Patent number: 5842683
    Abstract: The present invention is related to an improved structure of a ball valve especially used in food, said ball valve is a hollow valve body. A ball shape gate having penetrating channel is installed on the hollow crossing portion of said valve body. A rotary buckle groove is a installed on the upper end of said ball shape gate.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: December 1, 1998
    Assignee: Upsoon Industrial Co., Ltd.
    Inventor: J. J. Wei