Patents by Inventor Hung Ban Tran

Hung Ban Tran 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).

  • Apparatus for attenuating traveling wave reflections from surfaces
    Patent number: 5721551
    Abstract: An apparatus for attenuating traveling wave reflections from a surface, due to an impedance mismatch between the surface and free space. The apparatus includes a resistive element having an impedance between that of the surface and free space. The resistive element is positionable relative to the surface so as to minimize the impedance mismatch between the surface and free space. The resistive element is preferably a resistively graded element, which includes a forward end with an impedance approaching the impedance of the surface. An aft end of the resistively graded element has a high impedance relative to free space. The aft end is positionable sufficiently distant from the surface so as to minimize any traveling wave reflection due to impedance mismatch between the surface and free space.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: February 24, 1998
    Assignee: Boeing North American, Inc.
    Inventors: Hung Ban Tran, Dennis M. Rubien, Pravit Tulyathan