Patents by Inventor Onorino G. Rosa

Onorino G. Rosa 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 purifying anthracyclinone glycosides by selective adsorption on resins
    Patent number: 4861870
    Abstract: Disclosed is a process for purifying an impure anthracyclinone glycoside by selective adsorption of a slightly acidic aqueous solution of an impure glycoside on at least one resin and subsequent de-absorption of the purified glycoside by elution with acidic water or a mixture of water and a polar solvent.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: August 29, 1989
    Assignee: Farmitalia Carlo Erba S.p.A.
    Inventors: Ernesto Oppico, Carlo Varesio, Onorino G. Rosa
  • Method for extracting phenylalanine from broths of bioconversion
    Patent number: 4668821
    Abstract: The invention discloses a method for extracting phenylalanine from the broths obtained by enzymatic processes; this method consists in flocculating and filtering the broth, concentrating the filtrate followed by filtering off the resulting cinnamic acid, decolorating and concentrating the filtrate to obtain phenylalanine crystals at a very pure degree.
    Type: Grant
    Filed: February 10, 1986
    Date of Patent: May 26, 1987
    Assignee: Farmitalia Carlo Erba S.p.A.
    Inventors: Onorino G. Rosa, Carlo Varesio, Ernesto Oppici
  • Process for purifying Tylosin
    Patent number: 4568740
    Abstract: Disclosed is a process for purifying Tylosin by selective adsorption of the fermentation broth previously brought to 7.5-10.0 pH on polymeric resins and by subsequent deadsorption of the purified product with a aqueous-alcoholic or aqueous-acetonic solution and further purification of the eluate by filtration through macroreticular weak anion resins.
    Type: Grant
    Filed: March 28, 1984
    Date of Patent: February 4, 1986
    Assignee: Farmitalia Carlo Erba S.p.A.
    Inventors: Ernesto Oppici, Onorino G. Rosa, Carlo Varesio, Giovanni Lazzari, Danillo Fabris