Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7588612 | Mobile nitrogen generation device | Herman Theodore Marwitz, Terry Wheaton, Brian Chung, David Scheierl, James Yang | 2009-09-15 |
| 6443245 | Non-cryogenic nitrogen for on-site downhole drilling and post drilling operations | — | 2002-09-03 |
| 6206113 | Non-cryogenic nitrogen for on-site downhole drilling and post drilling operations apparatus | — | 2001-03-27 |
| 6041873 | Non-cryogenic nitrogen for on-site downhole drilling and post drilling operations | — | 2000-03-28 |
| 5862869 | Non-cryogenic nitrogen for on-site downhole drilling and post drilling operations | — | 1999-01-26 |
| 5749422 | Non-cryogenic nitrogen for on-site downhole drilling and post drilling operations | — | 1998-05-12 |
| 5388650 | Non-cryogenic production of nitrogen for on-site injection in downhole drilling | — | 1995-02-14 |