Patents by Inventor John E. Mayfield

John E. Mayfield 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).

  • Brucella abortus antibody detection methods
    Patent number: 5188936
    Abstract: Diagnostic reagents comprising the 20 kd Brucella abortus CuZn superoxide dismutase (B. abortus lCuZnSOD) protein and peptide segments thereof, which are effective as antigenic determinants, have been identified. These reagents are useful for detecting an antibody response to the B. abortus CuZnSOD protein in bovine serum or other body fluid samples and can also be used for distinguishing between animals which have serum antibody of a natural B. abortus infection and those which have an antibody response to a B. abortus Strain 19 vaccine or a B. abortus Strain which does not express the 20 kd protein.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: February 23, 1993
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Louisa B. Tabatabi, John E. Mayfield, Bonnie L. Beck
  • Recombinant Brucella abortus gene expressing immunogenic protein
    Patent number: 5023174
    Abstract: A gene of Brucella abortus encoding a novel 31,000 dalton immunogenic protein has been isolated and introduced into synthetic recombinant DNA molecules. A plasmid containing the gene sequence also contains a promoter sequence for expression of the gene.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: June 11, 1991
    Assignee: Iowa State University Research Foundation
    Inventors: John E. Mayfield, Louisa B. Tabatabai