Patents by Inventor Duane L. Pierson

Duane L. Pierson 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).

  • METHODS FOR THE DIAGNOSIS OF VARICELLA ZOSTER VIRUS INFECTION
    Publication number: 20110262895
    Abstract: The present invention relates to methods and devices for the rapid assessment of saliva for the presence of varicella zoster virus (VZV) particles. The methods and devices permit rapid, simple and cost-effective diagnosis of primary VZV infection.
    Type: Application
    Filed: August 6, 2009
    Publication date: October 27, 2011
    Inventors: Robert E. Harding, Randall J. Cohrs, Donald H. Gilden, Duane L. Pierson, Satish K. Mehta
  • Evaluation of biofilms and the effects of biocides thereon
    Patent number: 6498862
    Abstract: Biofilm formation is monitored by real-time continuous measurement. Images are formed of sessile cells on a surface and planktonic cells adjacent the surface. The attachment of cells to the surface is measured and quantitated, and sessile and planktonic cells are distinguished using image processing techniques. Single cells as well as colonies are monitored on or adjacent a variety of substrates. Flowing streams may be monitored. The effects of biocides on biofilms commonly isolated from recyclable water systems are measured.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: December 24, 2002
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Duane L. Pierson, David W. Koenig, Saroj K. Mishra