Patents by Inventor Blair A. Sowa

Blair A. Sowa 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).

  • Vaccine comprising Brucella abortus which has O polysaccharide antigen absent
    Patent number: 5718903
    Abstract: The present invention is an improved vaccine against Brucella abortus which permits differentiation between vaccinated and field strain infected cattle. The vaccine can be administered in two different forms: (1) cell envelopes isolated from an O polysaccharide antigen deficient, stable transposon mutant of B. abortus or (2) an O polysaccharide antigen deficient, stable transposon mutant of B. abortus.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: February 17, 1998
    Assignee: The Texas A&M University System
    Inventors: Leslie Garry Adams, Richard P. Crawford, Donald S. Davis, Thomas A. Ficht, Roger Smith, III, Blair A. Sowa, Joe W. Templeton, John D. Williams, Albert M. Wu
  • Method for detecting species and biovars of Brucella
    Patent number: 5310649
    Abstract: A method for detecting Brucella infection in an animal which is reliable, rapid, and able to identify species and biovars of Brucella. The detection method includes the amplification of the omp2 gene locus of Brucella and analysis of restriction digestion fragments specific to Brucella and to individual species and groups of biovars of Brucella.
    Type: Grant
    Filed: May 22, 1990
    Date of Patent: May 10, 1994
    Assignee: Texas A & M University System
    Inventors: Thomas A. Ficht, Blair A. Sowa, L. Garry Adams