Patents by Inventor Don Christy

Don Christy 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).

  • Percutaneous drug delivery system
    Patent number: 5534260
    Abstract: A percutaneous drug delivery method and enhancement composition are disclosed. The method comprises applying an enzyme preparation containing suitable amounts of non-enzyme permeation enhancers, such as lactam compounds (e.g. 1-substituted-azacycloheptan-2-one), and propylene glycol to a localized area of skin for a predetermined amount of time to enhance that area of skin's permeability to selected drug(s); occluding the area of skin during the application; and then applying the selected drug(s) to the area of skin to allow the drug to penetrate through the skin and into the circulatory system of the animal. Greatly enhanced penetration of chemicals through the skin results from the described treatment.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: July 9, 1996
    Assignee: University of Utah
    Inventors: Robert V. Petersen, Tsung-Min Hsu, Han-Chen Lee, Don Christy
  • Percutaneous drug delivery system
    Patent number: 5296222
    Abstract: A percutaneous drug delivery method and enhancement composition are disclosed. The method comprises applying an enzyme preparation containing suitable amounts of non-enzyme permeation enhancers, such as lactam compounds (e.g. 1-substituted-azacycloheptan-2-one), and propylene glycol to a localized area of skin for a predetermined amount of time to enhance that area of skin's permeability to selected drug(s); occluding the area of skin during the application; and then applying the selected drug(s) to the area of skin to allow the drug to penetrate through the skin and into the circulatory system of the animal. Greatly enhanced penetration of chemicals through the skin results from the described treatment.
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: March 22, 1994
    Assignee: University of Utah
    Inventors: Robert V. Petersen, Tsung-Min Hsu, Han-Chen Lee, Don Christy