Patents by Inventor Angela D. Atherton

Angela D. Atherton 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).

  • Freeze-dried dosage forms and methods for preparing the same
    Patent number: 5188825
    Abstract: A method of preparing a freeze-dried dosage form including a water soluble active agent is disclosed. The water soluble active agent is bonded to an ion exchange resin to form a substantially water insoluble complex. This complex is then mixed with a compatible carrier and freeze-dried. The resulting freeze-dried dosage form contains an effective unit dosage amount of the active agent and exhibits enhanced compositional and physical stability, as well as permitting processing according to conventional freeze-drying techniques.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: February 23, 1993
    Inventors: Martin C. Iles, Angela D. Atherton, Neil M. Copping