Patents by Inventor J. Courtney Davidson

J. Courtney 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).

  • Pin-deposition of conductive inks for microelectrodes and contact via filling
    Patent number: 7036220
    Abstract: A method of metalization of an integrated microsystem. The method comprises providing a substrate and applying a conductive material to the substrate by taking up small aliquots of conductive material and releasing the conductive material onto the substrate to produce a circuit component.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: May 2, 2006
    Assignee: The Regents of the University of California
    Inventors: J. Courtney Davidson, Peter A. Krulevitch, Mariam N. Maghribi, Julie K. Hamilton, William J. Benett, Armando R. Tovar
  • Modified electrokinetic sample injection method in chromatography and electrophoresis analysis
    Patent number: 6319379
    Abstract: A sample injection method for horizontal configured multiple chromatography or electrophoresis units, each containing a number of separation/analysis channels, that enables efficient introduction of analyte samples. This method for loading when taken in conjunction with horizontal microchannels allows much reduced sample volumes and a means of sample stacking to greatly reduce the concentration of the sample. This reduction in the amount of sample can lead to great cost savings in sample preparation, particularly in massively parallel applications such as DNA sequencing. The essence of this method is in preparation of the input of the separation channel, the physical sample introduction, and subsequent removal of excess material. By this method, sample volumes of 100 nanoliter to 2 microliters have been used successfully, compared to the typical 5 microliters of sample required by the prior separation/analysis method.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: November 20, 2001
    Assignee: The Regents of the University of California
    Inventors: J. Courtney Davidson, Joseph W. Balch
  • System and method for optically locating microchannel positions
    Patent number: 6225635
    Abstract: A system and method is disclosed for optically locating a microchannel position. A laser source generates a primary laser beam which is directed at a microchannel plate. The microchannel plates include microchannels at various locations. A back-reflectance beam detector receives a back-reflected beam from the plate. The back-reflected beam is generated when the primary beam reflects off of the plate. A photodiode circuit generates a trigger signal when the back-reflected beam exceeds a predetermined threshold, indicating a presence of the microchannel. The method of the present invention includes the steps of generating a primary beam, directing the primary beam to a plate containing a microchannel, receiving from the plate a back-reflected beam generated in response to the primary beam, and generating a trigger signal when the back-reflected beam exceeds a predetermined threshold which corresponds to a presence of the microchannel.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: May 1, 2001
    Assignee: The Regents of the University of California
    Inventors: Laurence R. Brewer, Joseph Kimbrough, Joseph Balch, J. Courtney Davidson