Patents by Inventor Walter Keil

Walter Keil 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).

  • Detection reagent, article, and immunoassay method
    Patent number: 5561045
    Abstract: The binding site on an immunoglobulin for a protein is blocked by hydrophobically coupling the immunoglobulin to a blocking agent such as a label. This results in a detection reagent useful in a variety of test assays in which a protein and an immunoglobulin are advantageously used together, but separately. The reagent is useful in the simultaneous determination of IgG and one of IgA or IgM. Anti-IgA-IgG or anti-IgM-IgG is coupled to a hydrophobic label, particularly a pigment or dye, which label blocks the binding site on IgG for Protein A, and labeled Protein A is added.
    Type: Grant
    Filed: January 4, 1994
    Date of Patent: October 1, 1996
    Assignee: Intracel Corporation
    Inventors: Brent L. Dorval, Lilibeth K. Denham, Walter Keil, Alexander M. Klibanov
  • Curable bituminous organopolysiloxane compositions
    Patent number: 4026853
    Abstract: Bituminous organopolysiloxanes which are capable of being cured comprising a bituminous material and a modified organopolysiloxane capable of being cross-linked.
    Type: Grant
    Filed: November 19, 1975
    Date of Patent: May 31, 1977
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Gunter Dressnandt, Hermann Meyer, Walter Keil, Oswin Sommer, Klaus Marquardt, Franz Heinrich Kreuzer, Eckhart Louis