Patents by Inventor Stanimir T. Zupanski

Stanimir T. Zupanski 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).

  • Capacitive probe sensor with reduced effective stray capacitance
    Patent number: 5212992
    Abstract: A capacative probe is provided which has reduced effective stray capacitance and is thus able to accurately detect probe contact with a conducting fluid with small fluid volumes. Effective stray capacitance is reduced by dividing stray capacitance sources into two or more sources, by reducing the capacitance value of each of the divided stray capacitance sources to a value which is substantially less than the capacitance difference which occurs as a result of probe contact with the fluid and by connecting at least selected ones of the divided stray capacitance sources in series to further reduce effective stray capacitance.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: May 25, 1993
    Assignee: Medical Laboratory Automation, Inc.
    Inventors: Jeffrey Calhoun, Stanimir T. Zupanski