Patents Assigned to Tecnofarmaci S.p.A.
  • Process for preparing grapeseed extracts enriched in procyanidol oligomers
    Patent number: 5484594
    Abstract: An extract enriched in procyanidol oligomers almost free from monomers is obtained by subjecting a crude vegetable extract, for instance from Vitis vinifera, to ultrafiltration on membranes of cut-off from 3,000 to 600, or to a selective extraction with ethers, or esters or mixtures of ethyl acetate and aromatic hydrocarbons.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: January 16, 1996
    Assignees: Tecnofarmaci S.p.A., Indena S.p.A.
    Inventors: Enrico Frangi, Marco Bertani, Giuseppe Mustich, Gianfranco Tuccini
  • Process of concentration and purification of organic compounds
    Patent number: 5447635
    Abstract: A process for the concentration and purification of raw aqueous solutions of water-soluble non-ionic organic compounds, preferably those which are useful as contrast enhancing agents in diagnostic procedures, such as for example X-ray, NMR and ultra-sound diagnosis, through the use of tangential filtration on membranes is described. The process also allows the recovery of valuable reactants in excess and of reaction solvents, if any, and it is particularly useful for purifying expensive non-ionic iodinated compounds, which now have been widely used in X-ray imaging. The filtration plant is described.
    Type: Grant
    Filed: August 20, 1993
    Date of Patent: September 5, 1995
    Assignees: Bracco International B.V., Tecnofarmaci S.p.A.
    Inventors: Carlo Viscardi, Rodolfo Piva