Patents by Inventor Philip A. Mitchell

Philip A. Mitchell 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).

  • Masking methods using flexible strip
    Patent number: 5407716
    Abstract: A method of masking an area of a surface using a length of flexible foam strip having a layer of adhesive applied on opposite sides of the strip. The strip is attached to the surface by one of the layers of adhesive and a sheet of material is attached to the opposite side of the strip by the other of the layers of adhesive. The strip and sheet then isolate the area of the surface from contiguous areas of the surface.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: April 18, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Philip A. Mitchell