Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9121149 | Posts for road safety barrier | Sean Billingham, John M. Walton, Steve Wells, Matt Harriman | 2015-09-01 |
| 8985891 | Posts for road safety barrier | Sean Billingham, John M. Walton | 2015-03-24 |
| 7497640 | Road safety barriers | Sean Billingham, John M. Walton | 2009-03-03 |