|
| US5085424 | 2 Aug 1990 | 4 Feb 1992 | Grandstand International Corp. | Laminated playing surface |
| US6295756 | 5 Nov 1997 | 2 Oct 2001 | Turf Stabilization Technologies Inc. | Surface for sports and other uses |
| US7244477 | 20 Aug 2003 | 17 Jul 2007 | Brock USA, LLC | Multi-layered sports playing field with a water draining, padding layer |
| US7662468 | 15 Oct 2003 | 16 Feb 2010 | Brock USA, LLC | Composite materials made from pretreated, adhesive coated beads |
| US7713133 | 6 Sep 2002 | 11 May 2010 | | Surface composition for clay-like athletic fields |
| US7993729 | 27 Oct 2008 | 9 Aug 2011 | | Substrate for artificial turf |
| US8048506 | 12 Feb 2009 | 1 Nov 2011 | | Carpet |
