Patents by Inventor Dorothy J. Leeson

Dorothy J. Leeson 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).

  • Transdermal multipolymer drug delivery system
    Patent number: 4814168
    Abstract: A dermal compositon comprising a drug, a multi-polymer of vinyl acetate, polyethylene and optionally one or more monomers, a natural or synthetic rubber and a tackifying agent. The ratio of the multipolymer to the rubber is, respectively, about 1:1 to about 10:1 and more preferably 1:1 to 5:1 and more preferably 3:1. The dermal composition can optionally contain a crosslinking agent, tackifiers, penetration enhancers and other ingredients known for use in adhesives for the transdermal delivery of drugs. The dermal compositions can be produced by a variety of methods known in the preparation of drug containing adhesive preparations including the homogenous mixing of the multi-polymer, drug and optional crosslinking agent and additional ingredients in aqueous solution followed by removal of excess water.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: March 21, 1989
    Assignee: Noven Pharmaceuticals, Inc.
    Inventors: Steven Sablotsky, John M. Questel, Dorothy J. Leeson