Patents by Inventor Dennis E. Kohls

Dennis E. Kohls 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).

  • Pelletized sulfur concrete and method of preparing same
    Patent number: 5004799
    Abstract: An improved modified sulfur concrete product is provided in the form of discrete, self-sustaining pellets of modified sulfur concrete which can be shipped and stored for indefinite periods and remelted to yield useable concrete. The pellets are preferably formed by first preparing a quantity of hot modified sulfur concrete (74), followed by passing such concrete (74) into a pelletizing chamber (12) equipped with an elongated auger-type, axially rotatable mixing element (14) and apparatus (16) for the introduction of pressurized air and water into the chamber (12) in the form of a spray. Supplementary pressurized air may advantageously be added at spaced points along the length of the chamber (12).
    Type: Grant
    Filed: September 20, 1989
    Date of Patent: April 2, 1991
    Assignee: Reece Construction Company, Inc.
    Inventors: Dennis E. Kohls, Francis M. Moser