Patents by Inventor Shannon D. Stewart

Shannon D. Stewart 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).

  • Polyurethane biological sample collection and transport device and its use
    Patent number: 5163441
    Abstract: A microbiological culture collection and transport device maintains viable organisms for periods of time longer than possible with existing sampling devices. It also allows recovery of detectable antigen at levels not achievable with conventional swabs. The new device has a sterile swabbing tip made with a non-toxic polyurethane foam having open cells at its exposed surface. It does not require a transport medium and can be used dry. The device may further include a sample inoculator to distribute organisms collected onto a solid or semi solid medium. Methods for collecting and transporting microbiological specimens and for recovering detectable antigen are also described.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: November 17, 1992
    Assignee: Becton, Dickinson and Company
    Inventors: James F. Monthony, David T. Stitt, C. Michael Gosnell, Shannon D. Stewart
  • Biological sample collection and transport device
    Patent number: 5091316
    Abstract: A microbiological culture collection and transport device maintains viable organisms for periods of time longer than possible with existing sampling devices. It also allows recovery of detectable antigen at levels not achievable with conventional swabs. The new device has a sterile swabbing tip made with a non-toxic polyurethane foam having open cells at its exposed surface. It does not require a transport medium and can be used dry. The device may further include a sample inoculator to distribute organisms collected onto a solid or semi solid medium. Methods for collecting and transporting microbiological specimens and for recovering detectable antigen are also described.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: February 25, 1992
    Assignee: Becton, Dickinson and Company
    Inventors: James F. Monthony, David T. Stitt, C. Michael Gosnell, Shannon D. Stewart