Patents by Inventor Gregg A. Swayze

Gregg A. Swayze 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).

  • Spectral method for determining the source of expanded vermiculite insulation in attics and walls
    Patent number: 8751169
    Abstract: A method for identifying the source of vermiculite insulation in situ using a portable spectrometer with a light-emitting contact probe and a personal computer. Identification is accomplished using NIR reflectance spectroscopy and absorption band depth ratios to differentiate between vermiculite sources and to test for the presence of amphibole, talc, or serpentine contaminants in vermiculite insulation.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: June 10, 2014
    Assignee: The United States of America, as represented by the Secretary of the Department of the Interior
    Inventors: Gregg A. Swayze, Heather A. Lowers, Roger N. Clark