Patents by Inventor Robert Allen Willis

Robert Allen Willis 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).

  • Archimedes brush for semiconductor cleaning
    Patent number: 10271636
    Abstract: A cleaning device for cleaning a substrate is provided. In one aspect, the cleaning device includes a brush engaged with a mandrel, and the brush forms an Archimedean screw thread form. The brush is formed of an absorbent material, preferably foam. In one aspect, the brush is seated within a groove in the mandrel.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: April 30, 2019
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Bradley Scott Withers, Erik Scott Nelson, Robert Allen Willis
  • ARCHIMEDES BRUSH FOR SEMICONDUCTOR CLEANING
    Publication number: 20160128460
    Abstract: A cleaning device for cleaning a substrate is provided. In one aspect, the cleaning device includes a brush engaged with a mandrel, and the brush forms an Archimedean screw thread form. The brush is formed of an absorbent material, preferably foam. In one aspect, the brush is seated within a groove in the mandrel.
    Type: Application
    Filed: November 10, 2014
    Publication date: May 12, 2016
    Inventors: Bradley Scott Withers, Erik Scott Nelson, Robert Allen Willis