Patents by Inventor Gregory Allan Sprehn

Gregory Allan Sprehn 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).

  • Transparent Camera for Imaging the Eye
    Publication number: 20160242643
    Abstract: A method of illuminating and imaging the eye on or near the visual axis, without interrupting vision, useful for gaze tracking, micro-tracking, choroid self-examination, and long term fixation
    Type: Application
    Filed: February 19, 2015
    Publication date: August 25, 2016
    Applicant: RIVENDELL HEIGHTS, INC.
    Inventor: Gregory Allan Sprehn