Patents by Inventor Clark J. Wagner

Clark J. Wagner 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: 20080119105
    Abstract: The invention provides methods of making arrays of thin sheet microdischarge devices. In a preferred method of fabricating an array of microdischarge devices, a multi-layer dielectric layer thin sheet is position with respect to a first thin electrode. A second electrode thin sheet is joined on the dielectric layer sheet. An array of microcavities is provided through at least a portion of the dielectric layer sheet. The method can produce thin large arrays inexpensively. In preferred embodiments, each of the multi-layer dielectric layer thin sheet, the first thin electrode and the second electrode thin sheet have a thickness of less than less than 100 ?m. In preferred embodiments, the multi-layer dielectric is formed of polymer, and in other embodiments from oxides and/or nitrides. In a particular preferred embodiment, the multilayer dielectric is formed from oxide and nitride films.
    Type: Application
    Filed: October 31, 2007
    Publication date: May 22, 2008
    Inventors: J. Gary Eden, Sung-Jin Park, Clark J. Wagner
  • Patent number: 6867548
    Abstract: A discharge device is described that contains an anode, a cathode, and an insulating layer disposed between the anode and the cathode. A cavity is extends entirely through at least one of the anode or cathode and penetrates the dielectric layer. At least one of the anode or cathode may include a screen or the dielectric layer may have a plurality of films with at least two different dielectric constants. The voltage differences between the anode and cathode in each of multiple devices electrically connected together may be limited.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: March 15, 2005
    Assignee: Board of Trustees of the University of Illinois
    Inventors: J. Gary Eden, Sung-Jin Park, Clark J. Wagner
  • Patent number: 6815891
    Abstract: A discharge device has a diode with a depletion region, a channel extending through a surface of the diode, and a gas within the channel. The gas is excited and a discharge formed by reverse biasing the diode and establishing an electric field in the depletion region of the diode.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: November 9, 2004
    Assignee: Board of Trustees of the University of Illinois
    Inventors: J. Gary Eden, Sung-Jin Park, Clark J. Wagner
  • Publication number: 20040160162
    Abstract: A discharge device is described that contains an anode, a cathode, and an insulating layer disposed between the anode and the cathode. A cavity is extends entirely through at least one of the anode or cathode and penetrates the dielectric layer. At least one of the anode or cathode may include a screen or the dielectric layer may have a plurality of films with at least two different dielectric constants. The voltage differences between the anode and cathode in each of multiple devices electrically connected together may be limited.
    Type: Application
    Filed: February 19, 2004
    Publication date: August 19, 2004
    Applicant: Board of Trustees of the University of Illinois
    Inventors: J. Gary Eden, Sung-Jin Park, Clark J. Wagner
  • Patent number: 6695664
    Abstract: A discharge device is described that contains an anode, a cathode, and an insulating layer disposed between the anode and the cathode. A cavity is extends entirely through at least one of the anode or cathode and penetrates the dielectric layer. At least one of the anode or cathode may include a screen or the dielectric layer may have a plurality of films with at least two different dielectric constants. The voltage differences between the anode and cathode in each of multiple devices electrically connected together may be limited.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: February 24, 2004
    Assignee: Board of Trustees of the University of Illinois
    Inventors: J. Gary Eden, Sung-Jin Park, Clark J. Wagner
  • Publication number: 20030080664
    Abstract: A discharge device has a diode with a depletion region, a channel extending through a surface of the diode, and a gas within the channel. The gas is excited and a discharge formed by reverse biasing the diode and establishing an electric field in the depletion region of the diode.
    Type: Application
    Filed: October 26, 2001
    Publication date: May 1, 2003
    Inventors: J. Gary Eden, Sung-Jin Park, Clark J. Wagner
  • Publication number: 20030080688
    Abstract: A discharge device is described that contains an anode, a cathode, and an insulating layer disposed between the anode and the cathode. A cavity is extends entirely through at least one of the anode or cathode and penetrates the dielectric layer. At least one of the anode or cathode may include a screen or the dielectric layer may have a plurality of films with at least two different dielectric constants. The voltage differences between the anode and cathode in each of multiple devices electrically connected together may be limited.
    Type: Application
    Filed: October 26, 2001
    Publication date: May 1, 2003
    Inventors: J. Gary Eden, Sung-Jin Park, Clark J. Wagner
  • Patent number: 6541915
    Abstract: Start-up and re-ignition of a high pressure arc lamp are aided by injection of electrons toward a high pressure arc lamp electrode. A microdischarge device directs electrons toward an electrode of the arc lamp and is preferably turned off during normal operation of the arc lamp. The harsh environment of an arc lamp requires the microdischarge to be made from robust materials, such as ceramics, semiconductors or tungsten, for example. In the present invention, the discharge design must allow, preferably through a screen anode, for the escape of electrons from the microdischarge. This invention results in a decrease in the voltage required to start-up or re-ignite a lamp.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: April 1, 2003
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: James Gary Eden, Ju Gao, Sung-Jin Park, Clark J. Wagner