Patents by Inventor David B. Leef

David B. Leef 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).

  • Apparatus and methods for determining the quantity of and stabilizing a plurality of soiled industrial towels
    Patent number: 5728977
    Abstract: A method of stabilizing a plurality of soiled towels and determining the quantity of the towels comprises removing any foreign objects from the soiled towels, saturating the soiled towels with a liquid that prevents the evaporation of any volatile compounds, compressing the saturated towels to remove unabsorbed liquid, then weighing the compressed towels and calculating the approximate number of towels present by dividing the weight of the soiled compressed towels by the known weight of a soiled compressed towel. An apparatus for performing the method also is disclosed.
    Type: Grant
    Filed: April 9, 1996
    Date of Patent: March 17, 1998
    Inventors: Thomas W. Juday, Mervyn H. Edwardsen, James M. Leef, David B. Leef