Patents by Inventor Armando Grigoletto

Armando Grigoletto 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 purification of proteins
    Patent number: 5981716
    Abstract: The present invention is directed to a simple and efficient process for the recovery of a biologically active glycoprotein from a biological fluid containing it.In a preferred embodiment, it comprises:a) contacting a filtered culture fluid with a dihydroxyboronyl bearing chromatographic supportb) eluting with a first eluting buffer and contacting this eluate directly with an anion exchange matrix bearing quaternary ammonium functional groupsc) eluting with a second eluting buffer and collecting the product therefrom.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: November 9, 1999
    Assignee: Gruppo Lepettit, S.P.A.
    Inventors: Dino Zanette, Edoardo Giacomo Sarubbi, Adolfo Soffientini, Ermenegildo Restelli, Armando Grigoletto