Patents by Inventor Delio Zaccardelli

Delio Zaccardelli 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).

  • Method for occluding sequestering agents in filamentary structure, occluded sequestering agents thus obtained and their applications
    Patent number: 4263180
    Abstract: A method is disclosed for embedding sequestering agents in filamentary structures, the method comprising the steps of preparing an emulsion formed by an aqueous or nearly aqueous solution of the sequestering agent and a solution of the filament-forming polymer in an appropriate solvent, and spinning the emulsion in a coagulation bath.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: April 21, 1981
    Assignee: Snamprogetti S.p.A.
    Inventors: Walter Marconi, Francesco Bartoli, Silvio Gulinelli, Franco Morisi, Delio Zaccardelli
  • Radial reactor for enzyme-catalyzed reactions
    Patent number: 4242461
    Abstract: For effecting enzymic reaction, a reactor is disclosed, in which the flow of the solution to be treated through the catalytic bed material takes place radially. It is preferred to have the catalytic bed in the form of coils of enzyme-occluding fibers. The coils are variously piled up within the reactor. High outputs, low pressure drops and more than satisfactory conversion rates are obtained.
    Type: Grant
    Filed: September 12, 1978
    Date of Patent: December 30, 1980
    Assignee: Snamprogetti S.p.A.
    Inventors: Francesco Bartoli, Franco Morisi, Delio Zaccardelli
  • Process for the preparation of L-car-bamyl-amino acids and of the corresponding L-amino acids
    Patent number: 3964970
    Abstract: A process for the preparation of only one of the two stereoisomer forms carbamyl amino acids is provided wherein certain heterocyclic compounds having an assymmetrical carbon, such as 5-substituted hydantoins, are hydrolyzed in the presence of certain enzymes, such as dihydropyrimidinase extracted from calf liver. In another embodiment of the invention, the corresponding amino acids are provided by hydrolyzing the carbamyl amino acids in the presence of these same enzymes.
    Type: Grant
    Filed: May 10, 1974
    Date of Patent: June 22, 1976
    Assignee: Snam Progetti S.p.A.
    Inventors: Dino Dinelli, Franco Morisi, Delio Zaccardelli