Patents by Inventor Ann C. Vorwald

Ann C. Vorwald 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).

  • Restriction enzyme screen for differentiating porcine reproductive and respiratory syndrome virus strains
    Patent number: 6015663
    Abstract: A test based on restriction enzyme analysis identifies and differentiates strains of porcine reproductive and respiratory syndrome virus (PRRSV). Amplified cDNA from the ORF 5 region of the viral genome has been targeted for identification of unique restriction sites that allow for the differentiation of the vaccine strain from field strains, and for differentiation of field strains from each other through the use of selected restriction enzymes. This assay is useful for both clinical diagnosis of PRRSV field strains in vaccinated pigs as well as for epidemiological studies in the evaluation of the source and transmission of PRRS field viruses.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: January 18, 2000
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Ronald D. Wesley, Deborah F. Clouser, William L. Mengeling, Vladimir G. Andreyev, Ann C. Vorwald, Kelly M. Lager
  • Porcine reproductive and respiratory syndrome vaccine
    Patent number: 5976537
    Abstract: Vaccines against porcine reproductive and respiratory syndrome (PRRS) have been produced by attenuation of wild type strains of the virus selected from the group of attenuated NADC-8, attenuated NADC-9 and attenuated NVSL-14. These vaccines are useful in monovalent, bivalent or polyvalent vaccines.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: November 2, 1999
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: William L. Mengeling, Kelly M. Lager, Ann C. Vorwald