Patents by Inventor Harold W. Nolen, III

Harold W. Nolen, III 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).

  • Skin permeation enhancer compositions
    Patent number: 5238933
    Abstract: Skin permeation enhancer compositions are provided which increase the permeability of skin to transdermally administered pharmacologically active agents. The compositions contain a lower aliphatic ester of a lower aliphatic carboxylic acid such as ethyl acetate and a lower alkanol such as propylene glycol. Methods and transdermal drug delivery systems for using the compositions are also provided.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: August 24, 1993
    Assignee: SRI International
    Inventors: Paul G. Catz, David R. Friend, Harold W. Nolen, III