Patents by Inventor Roberta Fretta

Roberta Fretta 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: 11905257
    Abstract: The invention relates to a process for preparing Gadoteridol of formula (I). In particular, the process comprises the use of propylene oxide in the alkylation step of the compound of formula (II), wherein propylene oxide is directly reacted with the compound of formula (II) without being isolated, and wherein propylene oxide is obtained on demand by decomposition of propylene carbonate in the presence of an alkaline or alkaline earth metal halide as catalyst.
    Type: Grant
    Filed: December 1, 2021
    Date of Patent: February 20, 2024
    Assignee: BRACCO IMAGING S.P.A.
    Inventors: Roberta Fretta, Luciano Lattuada, Gabriele Meli
  • Publication number: 20230391735
    Abstract: The invention relates to a process for preparing Gadoteridol of formula (I). In particular, the process comprises the use of propylene oxide in the alkylation step of the compound of formula (II), wherein propylene oxide is directly reacted with the compound of formula (II) without being isolated, and wherein propylene oxide is obtained on demand by decomposition of propylene carbonate in the presence of an alkaline or alkaline earth metal halide as catalyst.
    Type: Application
    Filed: December 1, 2021
    Publication date: December 7, 2023
    Applicant: BRACCO IMAGING S.P.A.
    Inventors: Roberta FRETTA, Luciano LATTUADA, Gabriele MELI
  • Patent number: 11691875
    Abstract: The invention relates to a process for the recovery and recycling of the iodine from aqueous solutions comprising iodine-comprising aromatic compounds in which the iodine contained in said aromatic compounds is directly converted into molecular iodine at a pH lower than 1, in the absence of a catalyst.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: July 4, 2023
    Assignee: BRACCO IMAGING SPA
    Inventors: Laura Galimberti, Andrea Banin, Sonia Gazzetto, Fernanda Di Giorgio, Roberta Fretta
  • Patent number: 11667601
    Abstract: The present invention relates to the calcium complex of (4RS)(4-carboxy-5,8,11-tris(carboxymethyl)-1-phenyl oxa-5,8,11-triazatridecan-13-oato(5-))pentahydrogen (BOPTA) in the form of a salt, to the process for its preparation and to a formulation comprising said salt.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: June 6, 2023
    Assignee: BRACCO IMAGING S.P.A.
    Inventors: Andrea Banin, Laura Galimberti, Roberta Napolitano, Roberta Fretta
  • Publication number: 20230046541
    Abstract: The present invention relates to the calcium complex of (4RS)(4-carboxy-5,8,11-tris(carboxymethyl)-1-phenyl oxa-5,8,11-triazatridecan-13-oato(5-))pentahydrogen (BOPTA) in the form of a salt, to the process for its preparation and to a formulation comprising said salt.
    Type: Application
    Filed: December 17, 2020
    Publication date: February 16, 2023
    Applicant: BRACCO IMAGING S.P.A.
    Inventors: Andrea BANIN, Laura GALIMBERTI, Roberta NAPOLITANO, Roberta FRETTA
  • Patent number: 11014942
    Abstract: The present invention relates to a process for the preparation of a solid form of the gadobenate dimeglumine compound that comprises obtaining a solution of the said compound in a suitable solvent A wherein the amount by weight of the water optionally present in the solution is at most equal to or lower than the amount by weight of the gadobenate dimeglumine comprised in the solution and adding the obtained solution to an organic solvent B, acting as an appropriate antisolvent and favoring the formation of a solid form of the gadobenate dimeglumine that can be collected by filtration.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: May 25, 2021
    Assignee: BRACCO IMAGING S.P.A.
    Inventors: Roberta Mazzon, Roberta Fretta, Pier Lucio Anelli
  • Patent number: 10836710
    Abstract: The present invention generally relates to a process using a mechanochemical approach exploiting the mechanical milling of reactants for the manufacturing of acetyl Iopamidol and, more generally, of key intermediates of radiographic contrast agents, and of the contrast agents themselves.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: November 17, 2020
    Assignee: BRACCO IMAGING SPA
    Inventors: Alessandro Barge, Francesca Baricco, Giancarlo Cravotto, Roberta Fretta, Luciano Lattuada
  • Patent number: 10738000
    Abstract: The present invention relates to a method for the acetylation of an aqueous solution of lactic acid to (S)-2-acetyloxypropionic acid. The process comprises in particular removing water from the solution of lactic acid and reacting lactic acid with acetic anhydride in the presence of acetic acid.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: August 11, 2020
    Assignee: Bracco Imaging SpA
    Inventors: Roberta Fretta, Pietro Delogu, Fernanda Di Giorgio, Alfonso Nardelli, Stefano Sguassero, Carlo Felice Viscardi
  • Publication number: 20200131036
    Abstract: The invention relates to a process for the recovery and recycling of the iodine from aqueous solutions comprising iodine-comprising aromatic compounds in which the iodine contained in said aromatic compounds is directly converted into molecular iodine at a pH lower than 1, in the absence of a catalyst.
    Type: Application
    Filed: June 7, 2018
    Publication date: April 30, 2020
    Applicant: BRACCO IMAGING SPA
    Inventors: Laura GALIMBERTI, Andrea BANIN, Sonia GAZZETTO, Fernanda DI GIORGIO, Roberta FRETTA
  • Publication number: 20200079728
    Abstract: The present invention generally relates to a process using a mechanochemical approach exploiting the mechanical milling of reactants for the manufacturing of acetyl Iopamidol and, more generally, of key intermediates of radiographic contrast agents, and of the contrast agents themselves.
    Type: Application
    Filed: December 4, 2017
    Publication date: March 12, 2020
    Applicant: BRACCO IMAGING SPA
    Inventors: Alessandro BARGE, Francesca BARICCO, Giancarlo CRAVOTTO, Roberta FRETTA, Luciano LATTUADA
  • Publication number: 20200071341
    Abstract: The present invention relates to a process for the preparation of a solid form of the gadobenate dimeglumine compound that comprises obtaining a solution of the said compound in a suitable solvent A wherein the amount by weight of the water optionally present in the solution is at most equal to or lower than the amount by weight of the gadobenate dimeglumine comprised in the solution and adding the obtained solution to an organic solvent B, acting as an appropriate antisolvent and favoring the formation of a solid form of the gadobenate dimeglumine that can be collected by filtration.
    Type: Application
    Filed: November 8, 2019
    Publication date: March 5, 2020
    Applicant: BRACCO IMAGING S.P.A.
    Inventors: Roberta MAZZON, Roberta FRETTA, Pier Lucio ANELLI
  • Patent number: 10519171
    Abstract: The present invention relates to a process for the preparation of a solid form of the gadobenate dimeglumine compound that comprises obtaining a solution of the said compound in a suitable solvent A wherein the amount by weight of the water optionally present in the solution is at most equal to or lower than the amount by weight of the gadobenate dimeglumine comprised in the solution and adding the obtained solution to an organic solvent B, acting as an appropriate antisolvent and favoring the formation of a solid form of the gadobenate dimeglumine that can be collected by filtration.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: December 31, 2019
    Assignee: BRACCO IMAGING S.P.A.
    Inventors: Roberta Mazzon, Roberta Fretta, Pier Lucio Anelli
  • Publication number: 20190225570
    Abstract: The present invention relates to a method for the acetylation of an aqueous solution of lactic acid to (S)-2-acetyloxypropionic acid. The process comprises in particular removing water from the solution of lactic acid and reacting lactic acid with acetic anhydride in the presence of acetic acid.
    Type: Application
    Filed: February 14, 2019
    Publication date: July 25, 2019
    Applicant: BRACCO IMAGING S.P.A.
    Inventors: Roberta FRETTA, Pietro DELOGU, Fernanda DI GIORGIO, Alfonso NARDELLI, Stefano SGUASSERO, Carlo Felice VISCARDI
  • Patent number: 10246400
    Abstract: The present invention relates to a method for the acetylation of an aqueous solution of lactic acid to (S)-2-acetyloxypropionic acid. The process comprises in particular removing water from the solution of lactic acid and reacting lactic acid with acetic anhydride in the presence of acetic acid.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: April 2, 2019
    Assignee: Bracco Imaging S.P.A.
    Inventors: Roberta Fretta, Pietro Delogu, Fernanda Di Giorgio, Alfonso Nardelli, Stefano Sguassero, Carlo Felice Viscardi
  • Publication number: 20180222840
    Abstract: The present invention relates to a method for the acetylation of an aqueous solution of lactic acid to (S)-2-acetyloxypropionic acid. The process comprises in particular removing water from the solution of lactic acid and reacting lactic acid with acetic anhydride in the presence of acetic acid.
    Type: Application
    Filed: April 5, 2018
    Publication date: August 9, 2018
    Applicant: BRACCO IMAGING S.P.A.
    Inventors: Roberta FRETTA, Pietro DELOGU, Fernanda DI GIORGIO, Alfonso NARDELLI, Stefano SGUASSERO, Carlo Felice VISCARDI
  • Patent number: 9963416
    Abstract: The present invention relates to a method for the acetylation of an aqueous solution of lactic acid to (S)-2-acetyloxypropionic acid. The process comprises in particular removing water from the solution of lactic acid and reacting lactic acid with acetic anhydride in the presence of acetic acid.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: May 8, 2018
    Assignee: Bracco Imaging S.P.A.
    Inventors: Roberta Fretta, Pietro Delogu, Fernanda Di Giorgio, Alfonso Nardelli, Stefano Sguassero, Carlo Felice Viscardi
  • Patent number: 9795695
    Abstract: The present invention discloses a process for the preparation of gadobenate dimeglumine complex in a solid form. In particular, said solid form is conveniently obtained by spray-drying a corresponding liquid suspension at a given temperature and concentration. The present invention is particularly advantageous for the industrial scale as the solid form may be obtained by employing water as a solvent, which is a non-toxic solvent, easy to handle and basically not requiring troublesome health or safety precautions.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: October 24, 2017
    Assignee: BRACCO IMAGING S.p.A.
    Inventors: Pier Lucio Anelli, Pierfrancesco Morosini, Silvia Ceragioli, Fulvio Uggeri, Luciano Lattuada, Roberta Fretta, Aurelia Ferrigato
  • Publication number: 20170210692
    Abstract: The present invention relates to a method for the acetylation of an aqueous solution of lactic acid to (S)-2-acetyloxypropionic acid. The process comprises in particular removing water from the solution of lactic acid and reacting lactic acid with acetic anhydride in the presence of acetic acid.
    Type: Application
    Filed: June 10, 2015
    Publication date: July 27, 2017
    Applicant: BRACCO IMAGING S.P.A.
    Inventors: Roberta FRETTA, Pietro DELOGU, Fernanda DI GIORGIO, Alfonso NARDELLI, Stefano SGUASSERO, Carlo Felice VISCARDI
  • Publication number: 20170190719
    Abstract: The present invention relates to a process for the preparation of a solid form of the gadobenate dimeglumine compound that comprises obtaining a solution of the said compound in a suitable solvent A wherein the amount by weight of the water optionally present in the solution is at most equal to or lower than the amount by weight of the gadobenate dimeglumine comprised in the solution and adding the obtained solution to an organic solvent B, acting as an appropriate antisolvent and favoring the formation of a solid form of the gadobenate dimeglumine that can be collected by filtration.
    Type: Application
    Filed: July 20, 2015
    Publication date: July 6, 2017
    Applicant: BRACCO IMAGING S.P.A.
    Inventors: Roberta MAZZON, Roberta FRETTA, Pier Lucio ANELLI
  • Publication number: 20160228583
    Abstract: The present invention discloses a process for the preparation of gadobenate dimeglumine complex in a solid form. In particular, said solid form is conveniently obtained by spray-drying a corresponding liquid suspension at a given temperature and concentration. The present invention is particularly advantageous for the industrial scale as the solid form may be obtained by employing water as a solvent, which is a non-toxic solvent, easy to handle and basically not requiring troublesome health or safety precautions.
    Type: Application
    Filed: April 15, 2016
    Publication date: August 11, 2016
    Applicant: BRACCO IMAGING S.p.A.
    Inventors: Pier Lucio ANELLI, Pierfrancesco MOROSINI, Silvia CERAGIOLI, Fulvio UGGERI, Luciano LATTUADA, Roberta FRETTA, Aurelia FERRIGATO