Patents by Inventor Thomas L. Eckels

Thomas L. Eckels 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).

  • Publication number: 20220315820
    Abstract: A method of manufacturing a shaped abrasive particle is disclosed. The method includes filling a cavity of a tool with an abrasive particle precursor material. The cavity has at least an interior surface that extends downward from a tool top surface at an angle. The method also includes leveling the abrasive particle precursor material such that a top surface of the abrasive particle precursor materials is flush with the tool surface, such that a sharp portion is formed along the intersection between the sloped wall of the tool cavity and the tool surface and the sharp portion is within the same plane as the tool surface. The method also includes removing a dried abrasive particle precursor from the cavity of the tool. The abrasive particle has a sharp portion formed along the intersection between the interior surface and the tool surface.
    Type: Application
    Filed: July 14, 2020
    Publication date: October 6, 2022
    Inventors: Fay T. Salmon, Cory M. Arthur, David T. Buckley, Thomas J. Nelson, Joseph B. Eckel, Emily L. Bowen, Alireza Ghaderi, Dwight D. Erickson, Wayne W. Maurer
  • Patent number: 4223180
    Abstract: This invention recovers the time waveform envelope of a human voice signal ithout the loss of subtleties providing speaker recognition cues and voice quality.This is accomplished by rectifying the voice envelope and then obtaining slope information about the original time waveform to detect peaks which are successively held by sample and hold circuitry.
    Type: Grant
    Filed: December 22, 1978
    Date of Patent: September 16, 1980
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Thomas L. Eckels