Patents by Inventor Giancarlo E. Bianchi

Giancarlo E. Bianchi 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 L-.alpha.-aminoacids
    Patent number: 4666840
    Abstract: The process of the invention is useful for the preparation of L-.alpha.-aminoacids and is based on the use of an N-carbamyl-.alpha.-aminoacid compound which is contacted with a E.C.3.5.2.2, a dihydropyrimidine hydrolase, enzyme to form a D-hydantoin. The D-hydantoin is hydrolyzed and racemized to form the D-N-carbamyl-.alpha.-aminoacid and the L-N-carbonyl-.alpha.-aminoacid. The L-N-carbamyl-.alpha.-aminoacid is thereafter transformed into the corresponding L-.alpha.-aminoacid.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: May 19, 1987
    Assignee: Sclavo S.p.A.
    Inventors: Roberto Olivieri, Giancarlo E. Bianchi, Eugenio Fascetti, Felice Centini