Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6394089 | Patient ventilator oxygen concentration system | Michael ZUGMAIER | 2002-05-28 |
| D412577 | Oxygen concentrator used in home health care | Sammy Mickelson, Dale L. Selhost, Kevin Gene McCulloh, Bradley D. Kreiner, Kelly M. Coffield +1 more | 1999-08-03 |
| 5549736 | Modular, stackable pressure swing absorption concentrator | Kelly M. Coffield, Kevin Gene McCulloh, Sammy Mickelson | 1996-08-27 |