Patents by Inventor Carlos Lenhardt

Carlos Lenhardt 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 cephradine
    Publication number: 20060189802
    Abstract: The present invention describes a process for preparing cephradine, said process comprising reacting 7-aminodesacetoxy cephalosporanic acid (7-ADCA) with D-dihydrophenylglycine in activated form (DHa) in the presence of an enzyme in a reaction mixture to form cephradine, resulting in a conversion of 7-ADCA into cephradine of at least 70%, wherein the concentration D-dihydrophenylglycine (DH) in the reaction mixture is below 2 wt.%, wherein the conversion of 7-ADCA into cephradine & equals; (nCEF/n7-ADCA)*100%, wherein nCEF=quantity of cephradine formed (in mole); and n7-ADCA=total quantity of 7-ADCA added to reaction mixture (in mole).
    Type: Application
    Filed: July 1, 2004
    Publication date: August 24, 2006
    Inventors: Dennis Heemskerk, Anja Gerarda Hogenboom, Carlos Lenhardt, Harold Moody, Theodorus Johannes Godfried Maria Dooren