Patents by Inventor Dennis Norgon

Dennis Norgon 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).

  • Fluid delivery system and propellant mixture therefor
    Patent number: 6264921
    Abstract: A fluid delivery system and a propellant therefor. The propellant comprises a mixture of a plurality of substances, the precise by-weight or by-molar combination of which is used to set the propellant pressure within a desirable pressure range. At least one of the plurality of propellant substances is a relatively higher vapor pressure fluid; and at least one of the plurality of propellant substances is a relatively lower vapor pressure fluid.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: July 24, 2001
    Assignee: Medtronic, Inc.
    Inventors: Bruce C. Johnson, Dennis Norgon, Paul Kratoska