Patents Represented by Attorney John Wooldridge

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  • Optical spectroscopy for the detection of ischemic tissue injury
    Patent number: 7587236
    Abstract: An optical method and apparatus is utilized to quantify ischemic tissue and/or organ injury. Such a method and apparatus is non-invasive, non-traumatic, portable, and can make measurements in a matter of seconds. Moreover, such a method and apparatus can be realized through optical fiber probes, making it possible to take measurements of target organs deep within a patient's body. Such a technology provides a means of detecting and quantifying tissue injury in its early stages, before it is clinically apparent and before irreversible damage has occurred.
    Type: Grant
    Filed: January 8, 2005
    Date of Patent: September 8, 2009
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Stavros Demos, Jason Fitzgerald, Christoph Troppmann, Andromachi Michalopoulou
  • Electronic non-contacting linear position measuring system
    Patent number: 6906528
    Abstract: A non-contacting linear position location system employs a special transmission line to encode and transmit magnetic signals to a receiver on the object whose position is to be measured. The invention is useful as a non-contact linear locator of moving objects, e.g., to determine the location of a magnetic-levitation train for the operation of the linear-synchronous motor drive system.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: June 14, 2005
    Assignee: The Regents of the University of California
    Inventor: Richard F. Post
  • Ultrashort-pulse laser machining system employing a parametric amplifier
    Patent number: 6728273
    Abstract: A method and apparatus are provided for increasing the energy of chirped laser pulses to an output in the range 0.001 to over 10 millijoules at a repetition rate 0.010 to 100 kHz by using a two stage optical parametric amplifier utilizing a bulk nonlinear crystal wherein the pump and signal beam size can be independently adjusted in each stage.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: April 27, 2004
    Assignee: The Regents of the University of California
    Inventor: Michael D. Perry
  • Seismic switch for strong motion measurement
    Patent number: 5420380
    Abstract: A seismic switching device that has an input signal from an existing microseismic station seismometer and a signal from a strong motion measuring instrument. The seismic switch monitors the signal level of the strong motion instrument and passes the seismometer signal to the station data telemetry and recording systems. When the strong motion instrument signal level exceeds a user set threshold level, the seismometer signal is switched out and the strong motion signal is passed to the telemetry system. The amount of time the strong motion signal is passed before switching back to the seismometer signal is user controlled between 1 and 15 seconds. If the threshold level is exceeded during a switch time period, the length of time is extended from that instant by one user set time period.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: May 30, 1995
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Philip E. Harben, Peter W. Rodgers, Daniel W. Ewert