Patents by Inventor Maurizio Zenoni

Maurizio Zenoni 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).

  • Bioavailable crystalline form of cefuroxime axetil
    Patent number: 5677443
    Abstract: A bioavailable crystalline form of cefuroxime axetil, obtained by treating known crystalline or amorphous cefuroxime axetil with water or with a water-miscible organic solvent or with a mixture thereof at a temperature of between +20.degree. C. and +100.degree. C., followed by cooling and separating the crystalline product by known methods.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: October 14, 1997
    Assignee: ACS Dobfar S.p.A.
    Inventors: Maurizio Zenoni, Mario Leone, Angelo Cattaneo, Leonardo Marsili
  • Process for the selective sulfoxide reduction of 3-hydroxy cephem and 3-methylene cepham compounds
    Patent number: 5663330
    Abstract: Process for selectively reducing cephalosporin sulfoxides of 3-hydroxy cephem and 3-methylene cepham compounds by treatment with a chlorinating agent in the presence of a solvent and a base, which are both inert to the chlorinating agent.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: September 2, 1997
    Assignee: ACS Dobfar S.p.A.
    Inventors: Maurizio Zenoni, Mario Leone, Giuseppe Alessandro Donadelli
  • Method for the acylation of the 7-amino group of the cephalosporanic ring
    Patent number: 5654425
    Abstract: A method for the acylation of the 7-amino group of the cephalosporanic ring, according to which a 7-ACA amino thiazolyl protected adduct is prepared by acylating said amino group by an aminothiazolyl acetic acid whose amino group has been protected by a phenyl acetyl or a phenoxy acetyl group, the amino group being then deprotected by aqueous hydrolysis in the presence of penicillin G amidase or respectively penicillin V amidase.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: August 5, 1997
    Assignee: Finpael S.p.A.
    Inventors: Maurizio Zenoni, Claudio Fuganti
  • Oxime derivatives of cephalosporanic structure
    Patent number: 5574153
    Abstract: The invention relates to oxime derivatives of cephalosporanic structure, possessing antibacterial activity.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: November 12, 1996
    Assignee: ACS Dobfar S.p.A.
    Inventors: Maurizio Zenoni, Mario Leone, Riccardo Colombo
  • Method for the acylation of the 7-amino group of the cephalosporanic ring
    Patent number: 5441874
    Abstract: A method for the acylation of the 7-amino group of the cephalosporanic ring, according to which a 7-ACA amino thiazolyl protected adduct is prepared by acylating said amino group by an aminothiazolyl acetic acid whose amino group has been protected by a phenyl acetyl or a phenoxy acetyl group, the amino group being then deprotected by aqueous hydrolysis in the presence of penicillin G amidase or respectively penicillin V amidase.
    Type: Grant
    Filed: July 7, 1993
    Date of Patent: August 15, 1995
    Assignee: Finpael S.p.A.
    Inventors: Maurizio Zenoni, Claudio Fuganti