Patents by Inventor Charles M. Philips

Charles M. Philips 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).

  • Medical examination table with probe holder
    Patent number: 4866998
    Abstract: A method of predicting the occurrence of deep vein thrombosis after a surgical procedure comprises monitoring changes in the internal diameter of a blood vessel using a non-invasive ultrasound technique. The frequency and magnitude of changes in vessel diameter are used to predict whether deep vein thrombosis will occur.
    Type: Grant
    Filed: May 20, 1987
    Date of Patent: September 19, 1989
    Assignee: Temple University of the Commonwealth System of Higher Education
    Inventors: Gwendolyn J. Stewart, Marvin C. Ziskin, Charles M. Philips, Philip D. Alburger, John W. Lachman, Donald W. Manuel, Michael R. Troisi
  • Method of predicting the occurrence of deep vein thrombosis by non-invasive measurement of vessel diameter
    Patent number: 4721113
    Abstract: A method of predicting the occurrence of deep vein thrombosis after a surgical procedure comprises monitoring changes in the internal diameter of a blood vessel using a non-invasive ultrasound technique. The frequency and magnitude of changes in vessel diameter are used to predict whether deep vein thrombosis will occur.
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: January 26, 1988
    Assignee: Temple University of the Commonwealth System of Higher Education
    Inventors: Gwendolyn J. Stewart, Marvin C. Ziskin, Charles M. Philips, Philip D. Alburger, John W. Lachman
  • Nystagmus processor for EEG machines
    Patent number: 4155352
    Abstract: A pair of active probes and a datum probe are affixedto the patient, and the active probes' signals are coupled to a preamplifier involving both common mode rejection and differential amplification. The information bearing voltage levels are coupled to a voltage controlled oscillator, the output of which bears information in the form of frequency variations. A photocoupler isolates the patient from unwanted feedback, and drives a phase locked loop which demodulates the signal back to an information bearing voltage. The derivative of the voltage signal is taken, is separated by polarity to correspond to the direction of eye motion, and is coupled to the EEG, thereby representing nystagmus velocity.
    Type: Grant
    Filed: June 9, 1977
    Date of Patent: May 22, 1979
    Assignee: Temple University
    Inventors: Joseph U. Toglia, Charles M. Philips