Patents by Inventor Charles C. Marshall

Charles C. Marshall 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).

  • Media conductivity measurement system
    Patent number: 12332203
    Abstract: A system for measuring the conductivity of a flexible media positioned between a conductive backing and a conductive roller, wherein the conductive roller contacts the flexible media in a roller contact region. A pressure control mechanism presses the conductive roller against the second surface of the flexible media with a specified contact pressure, and a motion control system provide a relative motion between the conductive roller and the flexible media. A resistance measuring system connected to the conductive roller and the conductive backing measures the conductivity of the flexible media within the roller contact region. A data recording system records the measured conductivity of the media as a function of position.
    Type: Grant
    Filed: October 6, 2022
    Date of Patent: June 17, 2025
    Assignee: EASTMAN KODAK COMPANY
    Inventors: Thomas W. McKeehan, Gary A. Smith, Charles C. Marshall, Wayne D. Martin
  • MEDIA CONDUCTIVITY MEASUREMENT SYSTEM
    Publication number: 20240118227
    Abstract: A system for measuring the conductivity of a flexible media positioned between a conductive backing and a conductive roller, wherein the conductive roller contacts the flexible media in a roller contact region. A pressure control mechanism presses the conductive roller against the second surface of the flexible media with a specified contact pressure, and a motion control system provide a relative motion between the conductive roller and the flexible media. A resistance measuring system connected to the conductive roller and the conductive backing measures the conductivity of the flexible media within the roller contact region. A data recording system records the measured conductivity of the media as a function of position.
    Type: Application
    Filed: October 6, 2022
    Publication date: April 11, 2024
    Inventors: Thomas W. McKeehan, Gary A. Smith, Charles C. Marshall, Wayne D. Martin