Patents by Inventor Francois Laurenty

Francois Laurenty 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).

  • Drying process and tower for products in grain form
    Patent number: 5111596
    Abstract: The application describes a drying process and a fully electric drying device consuming from 80 to 140 KWH of electricity per ton of water evaporated. One and the same drying fluid (air, gas or steam) saturated with steam at a temperature of .THETA.0 rises, gradually becoming laden with steam, after each of the numerous fluidized drying stages for granulous products descending in the opposite direction. Between each drying stage, the drying fluid is superheated by crossed tubes (14) maintained at a temperature .THETA.2 approximately 20.degree. C. greater than .THETA.0 by condensation (at 28) of the same steam compressed from .THETA.0 to .THETA.2, or by the condensation of auxiliary steam evaporated at .THETA.0-5.degree. C. by condensation of the vapors formed by the drying process.
    Type: Grant
    Filed: July 5, 1990
    Date of Patent: May 12, 1992
    Inventor: Francois Laurenty