Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7597501 | Hybrid energy absorbing reusable terminal | Dean C. Alberson, D. Lance Bullard, Jr., Christopher J. Karpathy | 2009-10-06 |
| 7246791 | Hybrid energy absorbing reusable terminal | Dean C. Alberson, D. Lance Bullard, Jr., Christopher J. Karpathy | 2007-07-24 |
| 7112004 | Hybrid energy absorbing reusable terminal | Dean C. Alberson, D. Lance Bullard, Jr., Christopher J. Karpathy | 2006-09-26 |
| 6637971 | Reusable high molecular weight/high density polyethylene guardrail | Malcolm H. Ray | 2003-10-28 |
| 6340268 | Impact attenuating barrier wall | Dean C. Alberson, D. Lance Bullard, Jr. | 2002-01-22 |
| 5823584 | Vehicle mounted crash impact attenuator | — | 1998-10-20 |
| 5403112 | Crash impact attenuator constructed from high molecular weight/high density polyethylene | — | 1995-04-04 |
| 5011326 | Narrow stationary impact attenuation system | — | 1991-04-30 |
| 4645375 | Stationary impact attenuation system | — | 1987-02-24 |
| 4200310 | Energy absorbing system | — | 1980-04-29 |