Patents by Inventor Darryl W. Maddox

Darryl W. Maddox 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).

  • Apparatuses and method for paleocurrent direction determination using reflected light
    Patent number: 4306810
    Abstract: A reflected light method of paleocurrent determination uses laser light source for investigation of paleocurrent direction for oriented sandstone samples from surface and from drill cores. The technique determines the average optic axis orientation by the variations in the intensity of a beam of reflected light from a polished surface of the sample as the sample is rotated.
    Type: Grant
    Filed: May 12, 1978
    Date of Patent: December 22, 1981
    Inventor: Darryl W. Maddox