Patents by Inventor Sergio Longhi

Sergio Longhi 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).

  • Obtaining a fat fraction with azeotropic solvents
    Patent number: 4880658
    Abstract: A process for the fractionation of fats and oils in which the fat or oil is dissolved in a binary azeotropic solvent mixture. The solvent containing the dissolved fat is cooled to a first temperature to crystallize a high melting stearine fraction, and the high melting stearine fraction is removed from the solvent-crystal mixture. If the fractionation process has for its objective the production of a high melting fat and a lower melting fat (oil), the fractionation process is terminated at this point. However, if an intermediate melting solid fraction is the objective, it is desirable in the first crystallization step to remove a smaller portion of high melting stearine fraction and then to cool the remaining solution to a second temperature lower than the first to crystallize an intermediate melting solid fraction. The second crop of crystals is removed from the solvent-crystal mixture by filtration or decantation.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: November 14, 1989
    Assignee: Nestec S.A.
    Inventors: Francis E. Luddy, Sergio Longhi
  • Fat fractions and mixtures thereof
    Patent number: 4839191
    Abstract: Fat fractions are produced by a process for the fractionation of fats and oils in which the fat or oil is dissolved in a binary azeotropic solvent mixture. The solvent containing the dissolved fat is cooled to a first temperature to crystallize a high melting stearine fraction, and the high melting stearine fraction is removed from the solvent-crystal mixture. If the fractionation process has for its objective the production of a high melting fat and a lower melting fat (oil), the fractionation process is terminated at this point. However, if an intermediate melting solid fraction is the objective, it is desirable in the first crystallization step to remove a smaller portion of high melting stearine fraction and then to cool the remaining solution to a second temperature lower than the first to crystallize an intermediate melting solid fraction. The second crop is crystals is removed from the solvent-crystal mixture by filtration or decantation.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: June 13, 1989
    Assignee: Nestec S.A.
    Inventors: Francis E. Luddy, Sergio Longhi
  • Process for fat fractionation with azeotropic solvents
    Patent number: 4601857
    Abstract: A process for the fractionation of fats and oils in which the fat or oil is dissolved in a binary azeotropic solvent mixture. The solvent containing the dissolved fat is cooled to a first temperature to crystallize a high melting stearine fraction, and the high melting stearine fraction is removed from the solvent-crystal mixture. If the fractionation process has for its objective the production of a high melting fat and a lower melting fat (oil), the fractionation process is terminated at this point. However, if an intermediate melting solid fraction is the objective, it is desirable in the first crystallization step to remove a smaller portion of high melting stearine fraction and then to cool the remaining solution to a second temperature lower than the first to crystallize an intermediate melting solid fraction. The second crop of crystals is removed from the solvent-crystal mixture by filtration or decantation.
    Type: Grant
    Filed: July 26, 1983
    Date of Patent: July 22, 1986
    Assignee: Nestec S. A.
    Inventors: Francis E. Luddy, Sergio Longhi