Patents by Inventor Charles D. Leibbrandt

Charles D. Leibbrandt 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).

  • Biosolids tracking system
    Patent number: 5519609
    Abstract: A biosolids tracking system monitors the quantity and quality of biosolids deposited on a plot of land. Global positioning system technology is used to determine the land coordinates of the boundary of the plot of land for accurate area calculation in order to determine the loading per unit area of biosolids including metals deposited on the plot. The system includes the ability to display superposed topographic and digitized photographic imagery of the plot with textual annotation.
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: May 21, 1996
    Assignee: Black & Veatch
    Inventors: Richard D. Kuchenrither, Richard P. Byrne, Charles D. Leibbrandt