Patents by Inventor William J. Kozarek

William J. Kozarek 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).

  • Storage stable topical pharmaceutical composition containing zinc erythromycin and low dielectric solvents
    Patent number: 4469684
    Abstract: A storage stable topical pharmaceutical composition containing zinc erythromycin, particularly useful in the topical treatment of acne vulgaris, is disclosed. This composition contains a solvent having a dielectric constant, measured at 25.degree. C., of from about 5.5 to about 15, preferably from about 8 to about 12, such as t-butanol, to impart storage stability to the zinc erythromycin component. The composition may additionally contain particularly selected pharmaceutically-acceptable nitrogen-containing stabilizer components, such as diisopropanolamine.
    Type: Grant
    Filed: October 15, 1982
    Date of Patent: September 4, 1984
    Assignee: The Procter & Gamble Company
    Inventors: James E. Huggins, Mary L. Batt, William J. Kozarek