Patents by Inventor Guido Neri

Guido Neri 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).

  • Pharmaceutical compositions consisting or consisting essentially of freeze-dried drug-carrying liposomes
    Patent number: 4746516
    Abstract: A method is disclosed for purifying non-homogeneous systems, known as liposomic suspensions, from non-entrapped drugs wherein said suspensions are treated with liquid or solid polymers of synthetic and organic nature having chemical functionality, which are used as ion-exchangers. The liquid or solid polymers are based on styrene, divinylbenzene, acrylic acid, methacrylic acid, and the like, normally known as ion-exchange resins, and may include carboxylic, phosphonic or sulphonic functions of different matrices. The ion-exchange resins may also include salified quaternary ammonium, primary, secondary and tertiary amminic or phosphinic functions or other functions with different matrices, including phenolformaldehyde, styrene-divinylbenzene, acrylates, methacrylates, hydrocarbons and condensation-resins.
    Type: Grant
    Filed: October 22, 1986
    Date of Patent: May 24, 1988
    Assignee: Farmitalia Carlo Erba S.p.A.
    Inventors: Luigi Moro, Guido Neri, Alessandro Rigamonti
  • Pharmaceutical sustained-release compositions
    Patent number: 4499066
    Abstract: New pharmaceutical sustained-release compositions, formulated as tablets, are prepared by mixing the active ingredient with excipient already granulated and coated with polymers and/or copolymers or a polymers- and/or copolymers-mixture substantially insoluble in water. Such pharmaceutical preparations enable one to enhance or to decrease very easily and precisely the sustained-release effect by regulating the granulometry of the excipient, the excipient/active ingredient ratio, the hardness, and the percentage of the polymers and/or copolymers or of the polymers- and/or copolymers-mixture.
    Type: Grant
    Filed: July 30, 1982
    Date of Patent: February 12, 1985
    Assignee: Farmitalia Carlo Erba S.p.A.
    Inventors: Luigi Moro, Grazia Maffione, Guido Neri, Alessandro Rigamonti
  • Pharmaceutical compositions consisting or consisting essentially of liposomes, and processes for making same
    Patent number: 4460577
    Abstract: A method is disclosed for purifying non-homogeneous systems, known as liposomic suspensions, from non-entrapped drugs wherein said suspensions are treated with liquid or solid polymers of synthetic and organic nature having chemical functionality, which are used as ion-exchangers. The liquid or solid polymers are based on styrene, divinylbenzene, acrylic acid, methacrylic acid, and the like, normally known as ion-exchange resins, and may include carboxylic, phosphonic, or sulphonic functions of different matrices. The ion-exchange resins may also include salified quaternary ammonium, primary, secondary and tertiary amminic or phosphinic functions or other functions with different matrices, including phenolformaldehyde, styrene-divinylbenzene, acrylates, methacrylates, hydrocarbons and condensation-resins.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: July 17, 1984
    Assignee: Farmitalia Carlo Erba S.p.A.
    Inventors: Luigi Moro, Guido Neri, Alessandro Rigamonti