Patents by Inventor Katheryne M. McDonald

Katheryne M. McDonald 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).

  • Capillary flow device and method for measuring activated partial thromboplastin time
    Patent number: 5039617
    Abstract: Methods and devices are provided for carrying out activated partial thromboplastin time (APTT) analysis on a whole blood sample to which no anticoagulant has been added by applying the sample to a capillary track contained in a housing, wherein the capillary track comprises sample entry and venting ports, at least one capillary track connecting the entry and venting ports, and reagents capable of initiating an APTT analysis, wherein clotting time is measured by the cessation of blood flow in the capillary track.
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: August 13, 1991
    Assignee: Biotrack, Inc.
    Inventors: Katheryne M. McDonald, Laura J. Winfrey, Michael M. Gorin, James L. Hill, Po C. Hsu