Patents by Inventor Margaret Jeanette Smith-Lewis

Margaret Jeanette Smith-Lewis 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).

  • Immunoassay elements having a receptor zone
    Patent number: 5714340
    Abstract: A dry immunoassay analytical element, for assaying a ligand is disclosed. The element comprises, in the following order, (a) a layer containing a labeled ligand, (b) a bead spreading layer, c) a cross-linked hydrophilic polymer layer and d) a support; wherein(i) a fixed concentration of an immobilized receptor for the labeled ligand is located in a zone at the interface of layers (b) and (c); and(ii) the receptors are immobilized by being covalently bonded to polymeric beads that are smaller than the beads in layer (c).
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: February 3, 1998
    Assignee: Johnson & Johnson Clinical Diagnostics, Inc.
    Inventors: Richard Calvin Sutton, Margaret Jeanette Smith-Lewis, Linda Ann Mauck, Wayne Arthur Bowman, Susan Jean Danielson