Patents by Inventor Lanny R. Duvall

Lanny R. Duvall 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).

  • Sovent removal process
    Patent number: 5723433
    Abstract: A method of removing solvents from a paste includes introducing a heated paste into a channel of a dryer under pressure selected so as to avoid flashing of any of the components of the paste. At the inlet of the channel, the pressure is dropped, resulting in the flashing of selected components of the paste. As the paste advances through the channel heat is applied to the paste. Vapor liberated during the flashing acts as a motive force to convey the paste along the channel. The resulting concentrate is collected at an outlet of the channel.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 3, 1998
    Assignee: The Chemithon Corporation
    Inventors: Lanny R. Duvall, Burton Brooks, Walter Jessup