Patents by Inventor Eric W. Sanderson

Eric W. Sanderson 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: 4733425
    Abstract: Mascara brush construction composed of a plurality of radially extending bristle filaments fastened in brush formation by a helically twisted metallic wire core. The bristles are tubular or hollow polyamide filaments, each crimped at the midpoint of its length by portions of the helically twisted wire so that the filament halves flare outward in various directions from the brush core. In an alternate embodiment the filaments are noncircular in cross-section and include a plurality of longitudinal, radially extending flange portions.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: March 29, 1988
    Assignee: Sanderson-MacLeod, Inc.
    Inventors: Franklin J. Hartel, Eric W. Sanderson