Patents by Inventor Keith R. Hildelbrand

Keith R. Hildelbrand 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).

  • Polymer matrix drug delivery apparatus
    Patent number: 5807306
    Abstract: A drug delivery apparatus and method for delivering a drug locally to internal body tissue using a catheter device including a polymer matrix containing a drug. The drug is actively transported from the polymer matrix to the internal body tissue using iontophoresis or phonophoresis. In addition, the polymer matrix can be expanded to promote intimate contact with the walls of a passageway or vessel.
    Type: Grant
    Filed: August 16, 1994
    Date of Patent: September 15, 1998
    Assignee: CorTrak Medical, Inc.
    Inventors: J. Edward Shapland, Keith R. Hildelbrand, Joel R. Racchini, Jin Shimada, Mark B. Knudson