Patents by Inventor Eugene Trinh

Eugene Trinh 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).

  • System for monitoring physical characteristics of fluids
    Patent number: 4391129
    Abstract: An apparatus and method are described for measuring physical characteristics of a fluid, by placing a drop (16) of the fluid in a bath (14) of a second fluid and passing acoustic waves through the bath. The applied frequency of the acoustic waves is varied, to determine the precise value of a frequency at which the drop undergoes resonant oscillations. The resonant frequency indicates the interfacial tension of the drop (16) in the bath (14), and the interfacial tension can indicate physical properties of the fluid in the drop.
    Type: Grant
    Filed: March 23, 1981
    Date of Patent: July 5, 1983
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration,
    Inventors: Eugene Trinh, Taylor G. Wang