Patents by Inventor JOHN C. MUSSON

JOHN C. MUSSON 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).

  • Patent number: 11955324
    Abstract: A high-power pulsed surface processing system includes insulated-gate bipolar transistors (IGBT) to replicate desirable pulse structures with high precision, at low cost, and with high reliability within a single system. The pulsed surface processing system includes a power supply, an anode and a cathode, a dual gate driver supplying power to one or more IGBT gates, and one or more capacitor banks. Pulse formation software controls the timing and duration of electrical pulses to the electrodes. A freewheeling diode protects the system from an abrupt reduction of current in the circuit. The high-power pulsed surface processing system may be used to control versatile and complex pulse structures while with precise control of instantaneous pulse powers, pulse timing, and process control. The inclusion of dual gate drivers also offers the ability for multiple pulsers to be created and “slaved” together for a wide variety of custom processes.
    Type: Grant
    Filed: October 6, 2021
    Date of Patent: April 9, 2024
    Assignee: JEFFERSON SCIENCE ASSOCIATES, LLC
    Inventors: Hui Tian, John C. Musson, Matthew Creed Burton, Anne-Marie Valente-Feliciano, Larry Phillips
  • Publication number: 20220199381
    Abstract: A high-power pulsed surface processing system includes insulated-gate bipolar transistors (IGBT) to replicate desirable pulse structures with high precision, at low cost, and with high reliability within a single system. The pulsed surface processing system includes a power supply, an anode and a cathode, a dual gate driver supplying power to one or more IGBT gates, and one or more capacitor banks. Pulse formation software controls the timing and duration of electrical pulses to the electrodes. A freewheeling diode protects the system from an abrupt reduction of current in the circuit. The high-power pulsed surface processing system may be used to control versatile and complex pulse structures while with precise control of instantaneous pulse powers, pulse timing, and process control. The inclusion of dual gate drivers also offers the ability for multiple pulsers to be created and “slaved” together for a wide variety of custom processes.
    Type: Application
    Filed: October 6, 2021
    Publication date: June 23, 2022
    Inventors: HUI TIAN, JOHN C. MUSSON, MATTHEW CREED BURTON, ANNE-MARIE VALENTE-FELICIANO, LARRY PHILLIPS