Patents by Inventor Keith D. Grinstead, Jr.

Keith D. Grinstead, Jr. 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).

  • Optical method for quantitating dissolved oxygen in fuel
    Patent number: 5919710
    Abstract: A method for the quantitative determination of dissolved oxygen in a liquid fuel includes the steps of doping a sample of the fuel with a preselected concentration of a probe material including a luminophor which exhibits luminescence of wavelength which is quenched by oxygen dissolved in the fuel, illuminating the fuel with light from a coherent light source, such as a laser, of a wavelength which induces the luminescence in the luminophor, and thereafter measuring the change with time of the luminescence from the luminophor in the fuel and determing from the change with time of the luminescence the concentration of oxygen in the fuel.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: July 6, 1999
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: James R. Gord, Steven W. Buckner, William L. Weaver, Keith D. Grinstead, Jr.