Patents by Inventor Tracy D. Wilkins

Tracy D. Wilkins 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).

  • Patent number: 10295536
    Abstract: Clostridium difficile disease involves a range of clinical presentations ranging from mild to self-limiting diarrhea to life-threatening pseudomembranous colitis and megacolon. Cases of C. difficile are treated differently depending on severity of disease. Mild and moderate cases may be treated with metronidazole while moderate-to-severe and relapsing cases are often treated with vancomycin or fidaxomicin. The presence of C. difficile disease is detected using a biomarker panel that includes C. difficile antigen (GDH), toxins A and B, and fecal lactoferrin. In patients suspected of C. difficile disease, if GDH is detected indicating the presence of C. difficile, and then toxins A and/or B are detected to indicate toxigenic C. difficile and support a diagnosis of C. difficile-associated disease, fecal lactoferrin concentrations are measured to determine severity of the disease by indicating the amount of intestinal inflammation.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: May 21, 2019
    Assignee: TECHLAB, INC.
    Inventors: James Hunter Boone, David M. Lyerly, Tracy D. Wilkins, Robert J. Carman
  • Publication number: 20160370361
    Abstract: The present invention provides assays and devices for detection of substances in liquid samples. The assays and devices utilize passive diffusion between a porous material and a porous membrane containing a specific binding pair member to enable detection of the substance of interest.
    Type: Application
    Filed: June 16, 2016
    Publication date: December 22, 2016
    Inventors: James H. Boone, David M. Lyerly, Tracy D. Wilkins
  • Patent number: 9470684
    Abstract: Accurate and fast detection of the presence of Campylobacter disease is important for the proper treatment of patients with Campylobacter infection. Present tests depend upon culture of viable bacteria and identification by microscopy, which requires care, skill, and two or more days for conclusive results. The current invention improves the ease of use and overcomes the limitations of loss of viability and delay inherent in Campylobacter bacterial culture and provides a more rapid alternative for the identification and diagnosis of Campylobacter and campylobacteriosis. The invention provides a new method of detecting Campylobacter by utilizing an outer membrane protein (OMP 18) to develop antibodies for use in immunoassays of bacterial cultures or human fecal samples.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: October 18, 2016
    Assignee: TECHLAB, INC.
    Inventors: Janice E. Buss, David M. Lyerly, Tracy D. Wilkins
  • Patent number: 9274112
    Abstract: The present invention provides assays and devices for detection of substances in liquid samples. The assays and devices utilize passive diffusion between a porous material and a porous membrane containing a specific binding pair member to enable detection of the substance of interest.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: March 1, 2016
    Assignee: TECHLAB, INC.
    Inventors: James H. Boone, David M. Lyerly, Tracy D. Wilkins
  • Patent number: 8790880
    Abstract: Accurate and fast detection of the presence of Clostridium difficile (C. difficile) disease is crucial for the proper treatment of patients with C. difficile infection. Present tests detecting the presence of C. difficile disease are fast and cost effective, but are not very sensitive. Using an ELISA including Cell Wall Protein 84 (Cwp84) increases the sensitivity of the ELISA. Cwp84 may be used alone or in combination with other markers to support a diagnosis of C. difficile-associated disease.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: July 29, 2014
    Assignee: Techlab, Inc.
    Inventors: Manli Y. Davis, David M. Lyerly, Tracy D. Wilkins
  • Publication number: 20130273642
    Abstract: The present invention provides assays and devices for detection of substances in liquid samples. The assays and devices utilize passive diffusion between a porous material and a porous membrane containing a specific binding pair member to enable detection of the substance of interest.
    Type: Application
    Filed: January 23, 2013
    Publication date: October 17, 2013
    Inventors: JAMES H. BOONE, David M. Lyerly, Tracy D. Wilkins
  • Patent number: 8541242
    Abstract: The present invention provides assays and devices for detection of substances in liquid samples. The assays and devices utilize passive diffusion between a porous material and a porous membrane containing a specific binding pair member to enable detection of the substance of interest.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: September 24, 2013
    Assignee: Techlab, Inc.
    Inventors: James H. Boone, David M. Lyerly, Tracy D. Wilkins
  • Patent number: 8431144
    Abstract: The invention provides materials, compositions, methods, and kits for deterring or repelling animals from eating plant materials. The invention relates to the use of particulate matter to deter animals from eating plant materials that are susceptible to grazing by animals. In exemplary embodiments, an adhesive is applied to target plant material and the particulate matter is then applied prior to curing or drying of the adhesive.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: April 30, 2013
    Inventor: Tracy D. Wilkins
  • Patent number: 8343726
    Abstract: The present invention provides assays and devices for detection of substances in liquid samples. The assays and devices utilize passive diffusion between a porous material and a porous membrane containing a specific binding pair member to enable detection of the substance of interest.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: January 1, 2013
    Assignee: Techlab, Inc.
    Inventors: James H. Boone, David M. Lyerly, Tracy D. Wilkins
  • Patent number: 6939548
    Abstract: The present invention relates to the field of medical immunology and further to pharmaceutical compositions, methods of making and methods of use of vaccines. More specifically this invention relates to recombinant proteins derived from the genes encoding Clostridium difficile toxin A and toxin B, and their use in an active vaccine against C. difficile.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: September 6, 2005
    Assignee: Techlab, Inc.
    Inventors: Tracy D. Wilkins, David M. Lyerly, J. Scott Moncrief, Limin Zheng, Carol Phelps
  • Patent number: 6733760
    Abstract: The present invention relates to the field of medical immunology and further to pharmaceutical compositions, methods of making and methods of use of vaccines. More specifically this invention relates to recombinant proteins derived from the genes encoding Clostridium difficile toxin A and toxin B, and their use in an active vaccine against C. difficile.
    Type: Grant
    Filed: April 10, 2000
    Date of Patent: May 11, 2004
    Assignee: Techlab, Inc.
    Inventors: Tracy D. Wilkins, David M. Lyerly, J. Scott Moncrief, Limin Zheng, Carol Phelps
  • Publication number: 20030129198
    Abstract: The present invention relates to the field of medical immunology and further to pharmaceutical compositions, methods of making and methods of use of vaccines. More specifically this invention relates to recombinant proteins derived from the genes encoding Clostridium difficile toxin A and toxin B, and their use in an active vaccine against C. difficile.
    Type: Application
    Filed: August 15, 2002
    Publication date: July 10, 2003
    Inventors: Tracy D. Wilkins, David M. Lyerly, J. Scott Moncrief, Limin Zheng, Carol Phelps
  • Patent number: 5589604
    Abstract: Recombinant protein C characterized by a high percentage of active protein can be obtained in the milk of transgenic mammals that incorporate DNAs according to the present invention. Transgenic mammals of the present invention are produced by introducing into developing embryos DNA that encodes protein C, such that the DNA is stably incorporated in the DNA of germ line cells of the mature mammals and inherited in normal, mendelian fashion.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: December 31, 1996
    Assignees: American Red Cross, Virginia Intellectual Property Division
    Inventors: William N. Drohan, Tracy D. Wilkins, William H. Velander, John L. Johnson
  • Patent number: 5098826
    Abstract: A method is provided for detecting the presence of C. difficile toxin A. Stool or other appropriate specimen is contacted with a reagent containing the human X, Y or I-antigens, each of which is a specific receptor for toxin A. The reagent may be intact cells, cell membranes, membrane fractions containing any of these antigens, glycoconjugates, as well as the purified oligosaccharide antigen per se. Binding of toxin A is determined by conventional assay techniques. The method may also be used to isolate and purify toxin A. Conversely, immobilized toxin A may be used to detect, isolate, or purify biological materials of interest expressing the X, Y or I antigens.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: March 24, 1992
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Tracy D. Wilkins, Kenneth D. Tucker
  • Patent number: 4879218
    Abstract: Monoclonal antibody to toxin A of C.difficile has been prepared and is used in an assay for toxin A of C.difficile.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: November 7, 1989
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Tracy D. Wilkins, David M. Lyerly
  • Patent number: 4863852
    Abstract: A method is provided for detecting the presence of C. difficile toxin A. Stool or other appropriate specimen is contacted with a reagent containing an available non-reducing galactose-alpha-1-3-galactosyl structure, which is a specific receptor for toxin A. The reagent may be intact cells, cell membranes, membrane fractions containing the toxin A receptor structure, glycoconjugates, as well as the purified toxin A receptor per se. Binding of toxin A is determined by conventional assay techniques. The method may also be used to isolate and purify toxin A. Conversely, immobilized toxin A is used to detect, isolate, or purify biological materials of interest containing the receptor structure.
    Type: Grant
    Filed: February 11, 1986
    Date of Patent: September 5, 1989
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Tracy D. Wilkins, Howard C. Krivan
  • Patent number: 4713240
    Abstract: The present invention relates to vaccine compositions which comprise at least one antigen chemically linked to a water-insoluble support combined with a pharmaceutically acceptable carrier. It also relates to a method of stimulating an organism's immune system by administration of these vaccine compositions.
    Type: Grant
    Filed: April 4, 1985
    Date of Patent: December 15, 1987
    Assignee: Research Corporation
    Inventors: Tracy D. Wilkins, David M. Lyerly
  • Patent number: 4533630
    Abstract: Mono-specific antibodies for each of toxin A and toxin B of C. difficile are produced and used in an assay for toxin A and toxin B, respectively. Purified toxin A of C. difficile is also produced.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: August 6, 1985
    Inventors: Tracy D. Wilkins, David M. Lyerly
  • Patent number: 4530833
    Abstract: Mono-specific antibodies for each of toxin A and toxin B of C. difficile are produced and used in an assay for toxin A and toxin B, respectively. Purified toxin A of C. difficile is also produced.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: July 23, 1985
    Inventors: Tracy D. Wilkins, Nadine M. Sullivan