Patents by Inventor Jen-Hwa Chen

Jen-Hwa Chen 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).

  • Patent number: 5951207
    Abstract: A method is provided for installing a tubular member in a porous solid medium beneath the surface of a liquid body. The method is initiated by placing the member in a substantially upright position within the liquid body with an open end of the member positioned upon the solid medium and the opposite end of the member extending above the surface of the liquid body. A downward driving force is applied to the member in the direction of the solid medium, advancing the member into the solid medium. As the member is driven downward into the solid medium, a plug of the solid medium forms in the open interior of the member. The length of the plug corresponds to the depth that the member penetrates the solid medium. At the same time, liquids freely migrate into the open interior of the member from the liquid body or the solid medium respectively, via the open end of the member.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: September 14, 1999
    Assignee: Chevron U.S.A. Inc.
    Inventor: Jen-Hwa Chen