Patents by Inventor Derek T. O'Hagen

Derek T. O'Hagen 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).

  • Preparation of protein microspheres, films and coatings
    Patent number: 6592844
    Abstract: A process is described for preparing microspheres, films and coatings from protein or modified protein in which the protein product is stabilized by carrying out the preparation in the presence of an aqueous solution of at least one &agr;-hydroxy acid. The microspheres, films and coatings so produced have improved stability in aqueous solution.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: July 15, 2003
    Assignees: Chiron Corporation, University of Nottingham
    Inventors: Allan G. A. Coombes, Wu Lin, Derek T. O'Hagen, Stanley S. Davis
  • PREPARATION OF PROTEIN MICROSPHERES, FILMS AND COATINGS
    Publication number: 20020182146
    Abstract: A process is described for preparing microspheres, films and coatings from protein or modified protein in which the protein product is stabilized by carrying out the preparation in the presence of an aqueous solution of at least one alpha-hydroxy acid. Preferred alpha-hydroxy acids are glycolic acid, lactic acid, alpha-hydroxybutyric acid or a mixture of two or more thereof. The microspheres, films and coatings so produced have improved stability in aqueous solution.
    Type: Application
    Filed: December 27, 1999
    Publication date: December 5, 2002
    Inventors: ALLAN G. A. COOMBES, WU LIN, DEREK T. O'HAGEN, STANLEY S. DAVIS
  • Preparation of protein microspheres, films and coatings
    Patent number: 6007791
    Abstract: A process is described for preparing microspheres, films and coatings from protein or modified protein in which the protein product is stabilized by carrying out the preparation in the presence of an aqueous solution of at least one .alpha.-hydroxy acid. Preferred .alpha.-hydroxy acids are glycolic acid, lactic acid, .alpha.-hydroxybutyric acid or a mixture of two or more thereof. The microspheres, films and coatings so produced have improved stability in aqueous solution.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: December 28, 1999
    Assignee: Chiron Corporation
    Inventors: Allan G. A. Coombes, Wu Lin, Derek T. O'Hagen, Stanley S. Davis