Patents by Inventor Wilmer L. Luedders

Wilmer L. Luedders 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).

  • Patent number: 4299826
    Abstract: Compositions for topical application of erythromycin and derivatives of erythromycin, comprising an erythromycin compound and a member selected from the group consisting of lauryl alcohol, diisopropyl sebacate, dibutyl sebacate, dioctyl adipate, propylene glycol dipelargonate, ethyl laurate, butyl laurate, ethyl myristate, butyl myristate, isopropyl palmitate, oleyl alcohol, diethyl sebacate, dioctyl sebacate, dioctyl azelate, hexyl laurate, ethyl caprate, butyl stearate, isopropyl isostearate, 2-ethyl-hexyl pelargonate, butyl benzoate, benzyl benzoate, benzyl salicylate, and dibutyl phthalate, and mixtures thereof, are especially useful as a treatment for acne.
    Type: Grant
    Filed: October 12, 1979
    Date of Patent: November 10, 1981
    Assignee: The Procter & Gamble Company
    Inventor: Wilmer L. Luedders
  • Patent number: 4261982
    Abstract: Zinc compounds, especially zinc salts of carboxylic acids, react with erythromycin to provide zinc erythromycin. Topical compositions containing zincerythromycin are especially useful as a topical treatment for acne.
    Type: Grant
    Filed: October 25, 1978
    Date of Patent: April 14, 1981
    Assignee: The Procter & Gamble Company
    Inventors: Wilmer L. Luedders, Richard E. Willins