Patents by Inventor Frederick C. Horstman

Frederick C. Horstman 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).

  • Bi-directional lateral chromatographic test device
    Patent number: 5006474
    Abstract: A chromatic test device for the performance of immuno- or chemical assays wherein a unitary planar fibrous filter body incorporates a sample application zone, a separation zone and a reaction zone and the application zone is in fluid communication with a first absorbent and the reaction zone is in fluid communication with a second absorbent to establish bilateral flow of the fluid component of the sample and of the analyte applied to the zones during the performance of an assay.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: April 9, 1991
    Assignee: Disease Detection International Inc.
    Inventors: Frederick C. Horstman, Julie Whiteside