Patents by Inventor David S. Josephs

David S. Josephs 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).

  • Methods for detecting bacterial infections
    Patent number: 9518972
    Abstract: The invention is directed to methods of detecting lung, gastrointestinal tract, and systemic infections by measuring 13CO2/12CO2 isotopic ratios of gaseous carbon dioxide in exhaled breath samples of a subject after administration of a 13C-isotopically-labeled compound.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: December 13, 2016
    Assignees: Avisa Pharma, Inc., Southwest Sciences, Inc.
    Inventors: David S. Joseph, Steven M. Massick, Kristen A. Peterson, Anthony L. Gomez, Joel A. Silver
  • Methods For Detecting Bacterial Infections
    Publication number: 20140114206
    Abstract: The invention is directed to methods of detecting lung, gastrointestinal tract, and systemic infections by measuring 13CO2/12CO2 isotopic ratios of gaseous carbon dioxide in exhaled breath samples of a subject after administration of a 13C-isotopically-labeled compound.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 24, 2014
    Applicant: Avisa Pharma Inc.
    Inventor: David S. Joseph
  • Apparatus and method for detecting floating nodes
    Patent number: 5459404
    Abstract: An apparatus and method for locating light sensitive circuit design flaws on an integrated circuit chip comprises placing the integrated circuit chip on a load board, which is coupled electrically with a tester to supply operating power to the chip device. The current used by the chip device is continuously measured. A stereoscopic microscope is used to direct a spot of light through one of the eyepieces of the microscope onto the upper surface of the chip; and the spot of light is moved along a predetermined path to scan the surface of the chip. Through the other eyepiece of the microscope, the location of the spot of light is observed. When the measured current drain undergoes changes, as the spot of light impinges on the chip, the location is noted. The quadrant or other area of the chip, in which the change of current consumption occurred as a result of the spot of light, then is scanned a second time with a smaller spot of light; and the process is repeated.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: October 17, 1995
    Assignee: ULSI Technology, Inc.
    Inventor: David S. Josephs