Patents by Inventor Patricia Di Salvatore

Patricia Di Salvatore 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).

  • Patent number: 6800767
    Abstract: The invention concerns a method for purifying the dimeric cyclic esters of lactic (or glycolic) acid starting from a raw lactide (or glycolide) comprising impurities, the method consisting in: extractive and controlled crystallization of the raw lactide, in aqueous medium, controlling the geometry of the formed crystals and carrying out a separation of phases into lactide and impurities; separation of the resulting suspension of crystals, into a phase poor in lactide and loaded with impurities, and a wet cake rich in lactide crystals; drying the resulting wet cake; and recrystallization in melted medium of the resulting dried impure lactide and recuperating the purified lactide.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: October 5, 2004
    Assignee: Brussels Biotech
    Inventors: Frédéric Van Gansberghe, Philippe Coszach, Patricia Di Salvatore, Jean-Christophe Bogaert
  • Publication number: 20040014991
    Abstract: The invention concerns a method for purifying the dimeric cyclic esters of lactic (or glycolic) acid starting from a raw lactide (or glycolide) comprising impurities, the method consisting in: extractive and controlled crystallization of the raw lactide, in aqueous medium, controlling the geometry of the formed crystals and carrying out a separation of phases into lactide and impurities; separation of the resulting suspension of crystals, into a phase poor in lactide and loaded with impurities, and a wet cake rich in lactide crystals; drying the resulting wet cake; and recrystallization in melted medium of the resulting dried impure lactide and recuperating the purified lactide.
    Type: Application
    Filed: January 13, 2003
    Publication date: January 22, 2004
    Inventors: Frederic Van Gansberghe, Philippe Coszach, Patricia Di Salvatore, Jean-Christophe Bogaert