Patents by Inventor Steven J. Zoha

Steven J. Zoha 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).

  • Specific binding assay involving separation of light emissions
    Patent number: 5300423
    Abstract: This invention uses the evanescent wave detection of particles to distinguish bound from free in an analyte-binding assay. Illumination below the critical angle is employed, and a beveled window is used to eliminate bulk fluorescence from the emitted evanescent wave liquid. The sample is held in a non-rigid film cuvette.
    Type: Grant
    Filed: September 3, 1992
    Date of Patent: April 5, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Steven J. Zoha, James E. Davis, Alan R. Craig, Alan M. Hochberg
  • Apparatus for performing fluorescent assays which separates bulk and evanescent fluorescence
    Patent number: 5192510
    Abstract: This invention uses the evanescent wave detection of particles to distinguish bound from free in an analyte-binding assay. Illumination below the critical angle is employed, and a beveled window is used to eliminate bulk fluorescence from the emitted evanescent wave liquid. The sample is held in a non-rigid film cuvette.
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: March 9, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Steven J. Zoha, James E. Davis, Alan R. Craig, Alan M. Hochberg