Patents by Inventor Cynthia Griffiths

Cynthia Griffiths 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).

  • Electrical method and apparatus for non-invasively detecting abnormal flow in conduits
    Patent number: 4425922
    Abstract: Method and apparatus are disclosed for obtaining flow information of a conductive fluid by detecting the streaming potential and analyzing the resultant signal. In a particular embodiment for detecting abnormal blood velocities in the arterial tree, the apparatus includes a flexible sensor having two fixedly spaced apart electrodes and a common mode signal electrode. Each sensor electrode is connected to an input of a differential amplifier and the common electrode is connected to the common input of the differential amplifier. The output signal from the differential amplifier, after filtering and amplification is provided to a recorder or oscilloscope so that it can be compared with the normal or average signal.A particular embodiment of the method is used to detect blood flow abnormalities, either too fast or too slow compared with most healthy individuals of the same age.
    Type: Grant
    Filed: April 7, 1981
    Date of Patent: January 17, 1984
    Assignee: BioResearch Inc.
    Inventors: James C. Conti, Elaine Strope, Eugene Findl, Cynthia Griffiths