Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8517349 | Guardrail terminals | Roger P. Bligh, C. Eugene Buth | 2013-08-27 |
| 7516945 | Cable anchor bracket | Dean C. Alberson, Roger P. Bligh, D. Lance Bullard, Jr., C. Eugene Buth, Stephen L. Brown | 2009-04-14 |
| 7325789 | Box beam terminals | C. Eugene Buth, Roger P. Bligh, Dean C. Alberson, D. Lance Bullard, Jr., Akram Y. Abu-Odeh | 2008-02-05 |
| 7243908 | Cable anchor bracket | Dean C. Alberson, Roger P. Bligh, D. Lance Bullard, Jr., C. Eugene Buth, Stephen L. Brown | 2007-07-17 |
| 7185882 | Box beam terminals | C. Eugene Buth, Roger P. Bligh, Dean C. Alberson, Lance D. Bullard, Jr., Akram Y. Abu-Odeh | 2007-03-06 |
| 6715735 | Head assembly for guardrail extruder terminal | Roger P. Bligh, Steve Brown, Eugene Buth | 2004-04-06 |
| 6575434 | Apparatus and methods for strengthening guardrail installations | Roger P. Bligh, King K. Mak | 2003-06-10 |
| 6435761 | Slot guard for slotted rail terminal | Roger P. Bligh, King K. Mak | 2002-08-20 |
| 6089782 | Frame catcher adaptation for guardrail extruder terminal | Roger P. Bligh, Don L. Ivey, Carl E. Buth | 2000-07-18 |
| 5547309 | Thrie-beam terminal with breakaway post cable release | King K. Mak, Roger P. Bligh, Dean L. Sicking | 1996-08-20 |
| 5503495 | Thrie-beam terminal with breakaway post cable release | King K. Mak, Roger P. Bligh, Dean L. Sicking | 1996-04-02 |
| 5407298 | Slotted rail terminal | Dean I. Sicking, Roger P. Bligh, King K. Mak | 1995-04-18 |
| 5295757 | Safety end barrier for concrete road barriers | Don L. Ivey, W. Lynn Beason | 1994-03-22 |
| 5156485 | Low profile concrete road barrier | Don L. Ivey, W. Lynn Beason | 1992-10-20 |
| 5078366 | Guardrail extruder terminal | Dean L. Sicking, Asif Qureshy, C. Eugene Buth | 1992-01-07 |
| 4928928 | Guardrail extruder terminal | C. Eugene Buth, Asif Qureshy, Dean L. Sicking | 1990-05-29 |
| 4815565 | Low maintenance crash cushion end treatment | Dean L. Sicking | 1989-03-28 |