Patents by Inventor Jimmy Lee Davidson

Jimmy Lee Davidson 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).

  • Diamond diode devices with a diamond microtip emitter
    Patent number: 6762543
    Abstract: Diamond microtip field emitters are used in diode and triode vacuum microelectronic devices, sensors and displays. Diamond diode and triode devices having integral anode and grid structures can be fabricated. Ultra-sharp tips are formed on the emitters in a fabrication process in which diamond is deposited into mold cavities in a two-step deposition sequence. During deposition of the diamond, the carbon graphite content is carefully controlled to enhance emission performance. The tips or the emitters are treated by post-fabrication processes to further enhance performance.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: July 13, 2004
    Assignee: Vanderbilt University
    Inventors: Weng Poo Kang, Jimmy Lee Davidson, David V. Kerns, Jr.
  • Mold method for forming vacuum field emitters and method for forming diamond emitters
    Patent number: 6132278
    Abstract: Diamond microtip field emitters are used in diode and triode vacuum microelectronic devices, sensors and displays. Diamond diode and triode devices having integral anode and grid structures can be fabricated. Ultra-sharp tips are formed on the emitters in a fabrication process in which diamond is deposited into mold cavities in a two-step deposition sequence. During deposition of the diamond, the carbon graphite content is carefully controlled to enhance emission performance. The tips or the emitters are treated by post-fabrication processes to further enhance performance.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: October 17, 2000
    Assignee: Vanderbilt University
    Inventors: Weng Poo Kang, Jimmy Lee Davidson, David V. Kerns, Jr.
  • Chemical sensor utilizing a chemically sensitive electrode in combination with thin diamond layers
    Patent number: 5656827
    Abstract: A solid state chemical sensing device is described in which a chemically sensitive electrode, and at least one diamond film are deposited on a conductive or insulating substrate. The device forms a sensing structure in which conduction of current through the device in the presence of a target chemical is dominated by space charged limited current, thereby providing enhanced sensitivity and selectivity.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: August 12, 1997
    Assignee: Vanderbilt University
    Inventors: Weng Poo Kang, Jimmy Lee Davidson, David V. Kerns, Jr.