Patents by Inventor Duane L. Aldous

Duane L. Aldous 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).

  • Sunscreen emulsions
    Patent number: 5543136
    Abstract: Disclosed are sunscreen emulsions, especially water-in-oil emulsions, containing zinc oxide and titanium dioxide in the continuous and discontinuous phases of the emulsion, respectively. The emulsions contain an agent such as tridecyl neopentanoate and also contain agents in sufficient quantities to form an oil phase that will produce an emulsion having a smooth and continuous appearance. Methods of making and processes for use of the emulsions are also disclosed.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: August 6, 1996
    Assignee: NuSkin International, Inc.
    Inventor: Duane L. Aldous