Patents by Inventor Delwin T. Lindsey

Delwin T. Lindsey 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).

  • APPARATUS AND METHODS FOR TESTING CONTRAST SENSITIVITY
    Publication number: 20110085140
    Abstract: A test for measuring the contrast sensitivity of a patient uses a set of card that each include a stimulus, such as a square wave grating, presented at a single low-spatial frequency. The gratings vary in contrast from card to card. The test allows for the determination of the maximum contrast sensitivity of the patient in a single measurement, without knowing the spatial frequency at which that maximum occurs, which is possible because the spatial frequency is low enough that it is most likely below the maximum of the contrast sensitivity function in patients of any age.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: THE OHIO STATE UNIVERSITY RESEARCH FOUNDATION
    Inventors: Angela M. Brown, Delwin T. Lindsey