Patents by Inventor Dennis R. Keefer

Dennis R. Keefer 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).

  • Laser fluorescence velocimeter
    Patent number: 4807990
    Abstract: A method and apparatus are disclosed for measuring a velocity component of a moving fluid. Coherent light at two different wavelengths is directed into the moving fluid to create a space-and-time modulated optical field within a sample volume and to cause a chemical component of the moving fluid to fluoresce. Measurement of temporal and/or spatial characteristics of the resulting fluorescence is employed to determine the velocity component of the moving field.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: February 28, 1989
    Assignee: University of Tennessee Research Corporation
    Inventor: Dennis R. Keefer