Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7749634 | Flow control for multiple stacks | I Daryl Chapman | 2010-07-06 |
| 7396601 | Flow control for multiple stacks | Daryl Chapman | 2008-07-08 |
| 6936362 | Variable pressure drop stack | Daryl Chapman | 2005-08-30 |