Patents by Inventor Danilo DEL PRETE

Danilo DEL PRETE 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).

  • Method for the separation of the isoprenic constituents of guayule
    Patent number: 10570312
    Abstract: Method for the separation of at least one isoprenic constituent from the resin of a plant of guayule and/or of the guayule type comprising the steps of: a) providing a defatted resin of guayule and/or of the guayule type; b) subjecting the defatted resin to partitioning of the liquid-liquid type with solvents that are immiscible in each other thus obtaining an apolar extract containing the isoprenic constituents guayulin A, guayulin B and argentatin B; and a polar extract containing the isoprene constituents argentatin A, argentatin C and argentatin D; and c) separating at least one isoprenic constituent from said polar extract and/or from the apolar extract thus obtained, wherein step c) comprises a step in which the polar extract is subjected to partitioning of the liquid-liquid type with solvents immiscible in each other and/or a step in which the apolar extract is subjected to partitioning of the solid-liquid type.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: February 25, 2020
    Assignee: versalis S.p.A
    Inventors: Cecilia Querci, Danilo Del Prete, Maria Caldararo, Gianni Girotti
  • METHOD FOR THE SEPARATION OF THE ISOPRENIC CONSTITUENTS OF GUAYULE
    Publication number: 20180171178
    Abstract: Method for the separation of at least one isoprenic constituent from the resin of a plant of guayule and/or of the guayule type comprising the steps of: a) providing a defatted resin of guayule and/or of the guayule type; b) subjecting the defatted resin to partitioning of the liquid-liquid type with solvents that are immiscible in each other thus obtaining an apolar extract containing the isoprenic constituents guayulin A, guayulin B and argentatin B; and a polar extract containing the isoprene constituents argentatin A, argentatin C and argentatin D; and c) separating at least one isoprenic constituent from said polar extract and/or from the apolar extract thus obtained, wherein step c) comprises a step in which the polar extract is subjected to partitioning of the liquid-liquid type with solvents immiscible in each other and/or a step in which the apolar extract is subjected to partitioning of the solid-liquid type.
    Type: Application
    Filed: July 29, 2016
    Publication date: June 21, 2018
    Applicant: versalis S.p.A.
    Inventors: Cecilia QUERCI, Danilo DEL PRETE, Maria CALDARARO, Gianni GIROTTI