Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8080165 | Systems and methods for disinfection | — | 2011-12-20 |
| 7507370 | Systems and methods for disinfection | John T. Pierson | 2009-03-24 |
| 7001571 | Systems and methods for disinfection | John T. Pierson | 2006-02-21 |
| 6230821 | Weight control system for a rotary drill assembly | Jasper Newton Warren | 2001-05-15 |
| 6202761 | Directional drilling method and apparatus | — | 2001-03-20 |