Patent 8449037 was granted and assigned to Herman Miller (manufacturer) on May, 2013 by the United States Patent and Trademark Office.
A seating structure includes a backrest member having an upper edge, opposite side edges and a lower edge. The backrest member has a forwardly facing convex shape formed along a vertical centerline thereof between the upper and lower edges. The lower edge has a forwardly facing concave shape. The lower edge has outer portions positioned forwardly of an entirety of the upper edge.