Patents by Inventor Stefano Cambiaghi

Stefano Cambiaghi 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).

  • Enzymatic process for preparing 7-aminocephalosporanic acid and derivatives
    Patent number: 5424196
    Abstract: Transformation of Cephalosporin C or its derivatives and salts into 7-aminocephalosporanic acid or its derivatives by an enzymatic two stage process with enzymes immobilized on a solid matrix.
    Type: Grant
    Filed: January 3, 1994
    Date of Patent: June 13, 1995
    Assignee: Antibioticos S.p.A.
    Inventors: Stefano Cambiaghi, Sergio Tomaselli, Roberto Verga
  • Process for preparing penems
    Patent number: 5215891
    Abstract: A process for preparing a compound of formula I: ##STR1## wherein R.sub.1 represents a hydroxy protecting group and R.sub.2 represents a carboxy protecting group, which comprises:hydrolyzing a compound of formula II ##STR2## wherein R.sub.1 and R.sub.2 are as defined above and R represents an alkyl, alkenyl or phenylalkyl group having from 1 to 18 carbon atoms, in the presence of an enzyme capable of selectively hydrolyzing the ester group of the 2-substituent thereof.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: June 1, 1993
    Assignee: Farmitalia Carlo Erba
    Inventors: Maria Altamura, Pietro Cesti, Franco Francalanci, Marcello Marchi, Marco Foa', Stefano Cambiaghi, Franco Dallatomasina
  • Process for preparing peptides
    Patent number: 4668625
    Abstract: The invention describes a process for preparing peptides. More particularly, a process for preparing L-.alpha.-aspartyl-L-phenylalanine C.sub.1 -C.sub.4 lower alkyl ester is described and claimed by enzymatic hydrolysis of a suitable N-acyl-derivative.
    Type: Grant
    Filed: August 7, 1984
    Date of Patent: May 26, 1987
    Assignee: Farmitalia Carlo Erba
    Inventors: Stefano Cambiaghi, Franco Dallatomasina, Pietro Giardino, Enzo Murador, Gaspare Spreafico