Patents by Inventor Carlo Distaso

Carlo Distaso 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).

  • Process for the preparation of 4-carboxy-5, 8,11-tris (carboxymethyl)-phenyl-2-oxa-5, 8 11-triazatridecan
    Patent number: 6162947
    Abstract: A novel a process for the preparation of the chelating agent of formula (I) ##STR1## 4-carboxy-5,8,11-tris(carboxymethyl)-1-phenyl-2-oxa-5,8,11-triazatridecan- 13-oic acid, commonly named BOPTA.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: December 19, 2000
    Assignee: Dibra S.p.A.
    Inventors: Marina Ausonio, Carlo Distaso, Giuseppe Gerardo Elia, Alessandro Lesignoli, Rodolfo Piva, Carlo Secchi, Carlo Felice Viscardi
  • Process for the preparation and separation of diastereomeric salts of folinic acid
    Patent number: 5710271
    Abstract: A process for the preparation, separation and purification of (6S) and (6R) diastereomers of folinic acid salts with at least dibasic amines is disclosed, which process comprises the hydrolysis of (6RS)-5,10-methenyl-5,6,7,8-tetrahydrofolic acid chloride hydrochloride with an at least dibasic amine and the subsequent separation of the diasteromeric salts.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 20, 1998
    Assignee: Dibra S.p.A.
    Inventors: Ernst Felder, Giorgio Ripa, Carlo Distaso