Patents by Inventor Aurelio Viglia

Aurelio Viglia 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).

  • Enzymic microbiological process for producing optically active aminoacids starting from hydantoins and/or racemic carbamoyl derivatives
    Patent number: 4312948
    Abstract: A method is disclosed for producing D-aminoacids from racemic mixtures of N-carbamoyl derivatives of such acids or from the corresponding hydantoins wherein the racemic compounds are subjected to the enzymic and microbiological action of an enzymic complex prepared from microorganisms of the Agrobacterium genus, more particularly the NRRL B 11291 strain.
    Type: Grant
    Filed: May 11, 1979
    Date of Patent: January 26, 1982
    Assignee: Snamprogetti S.p.A.
    Inventors: Roberto Olivieri, Aurelio Viglia, Ludwig Degen, Leonello Angelini, Eugenio Fascetti
  • Enzymic complexes adapted to convert racemic hydantoins into optically active aminoacids, and their applications
    Patent number: 4248967
    Abstract: Enzymic complexes deriving from micro-organisms belonging to the Bacillaceae family using an hydantoin or a derivative thereof as inductor of the enzymic activity are used for hydrolysing racemic hydantoins into optically active aminoacids. The method of preparation is an enzymic hydrolysis fostered by the enzyme deriving from such special micro-organisms. The hydrolysis can be effected at a comparatively high temperature, which can reach even 60.degree. C.
    Type: Grant
    Filed: March 10, 1978
    Date of Patent: February 3, 1981
    Assignee: Snamprogetti S.p.A.
    Inventors: Aurelio Viglia, Eugenio Fascetti, Elena Perricone, Ludwig Degen
  • Method of converting racemic hydantoins into optically active aminoacids
    Patent number: 4111749
    Abstract: A method is disclosed for converting racemic hydantoins into optically active aminoacids, wherein microorganisms of the Pseudomonas genus are used to hydrolyze the hydantoins into derivatives of D,L-aminoacids.Comparatively high temperatures and a definitely basic pH are favorable factors.
    Type: Grant
    Filed: July 9, 1976
    Date of Patent: September 5, 1978
    Assignee: Snamprogetti, S.p.A.
    Inventors: Ludwig Degen, Aurelio Viglia, Eugenio Fascetti, Elena Perricone