Patents by Inventor Karin L. Utberg

Karin L. Utberg 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).

  • Scattered total internal reflectance immunoassay system
    Patent number: 5017009
    Abstract: A new immunoassay system is provided for the detection of ligands or ligand binding partners in solution in a heterogeneous format. The invention relies upon the detection of back scattered light from an evanescent wave disturbed by the presence of a colloidal gold label brought to the interface by an immunological reaction. The evanescent wave existing at the interface in turn is the result of a totally internally reflected incident light wave. Placement of the detector at a back angle above the critical angle insures a superior signal-to-noise ratio.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: May 21, 1991
    Assignee: Ortho Diagnostic Systems, Inc.
    Inventors: Ernest G. Schutt, Richard S. Dondero, William P. Hansen, George B. Hovorka, Raymond E. Meyer, Karin L. Utberg, David L. Greenwood
  • Cuvette for receiving liquid sample
    Patent number: 4979821
    Abstract: A new immunoassay system is provided for the detection of ligands or ligand binding partners in solution in a heterogeneous format. The invention relies upon the detection of back scattered light from an evanescent wave disturbed by the presence of a colloidal gold label brought to the interface by an immunological reaction. The evanescent wave existing at the interface in turn is the result of a totally internally reflected incident light wave. Placement of the detector at a back angle above the critical angle insures a superior signal-to-noise ratio. Apparatus and methods for scanning, detecting and manipulating light including a scattered total internal reflectance immunoassay system are provided.
    Type: Grant
    Filed: August 1, 1989
    Date of Patent: December 25, 1990
    Assignee: Ortho Diagnostic Systems Inc.
    Inventors: Ernest G. Schutt, David L. Greenwood, Karin L. Utberg