Patents by Inventor D. Russell Pfleuger

D. Russell Pfleuger 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: 5462737
    Abstract: A liquid sealant composition is provided which forms a transparent, water-insoluble, flexible film over lipstick. It prevents lipstick from coming off when the lips come in contact objects such as with cups, drinking glasses, clothing, and food. The composition comprises ethyl cellulose, essential oils, and ethanol. Unlike such compositions known to the prior art, it causes no stinging or burning sensation on the lips after application, it has no irritating odor, and it uses no environmentally objectionable volatile chlorofluorocarbons.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: October 31, 1995
    Inventor: D. Russell Pfleuger