Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8778551 | Fluid flow pulsing for increased stability in PEM fuel cell | Ivan D. Chapman, Pinkhas A. Rapaport | 2014-07-15 |
| 8450025 | Assisted stack anode purge at start-up of fuel cell system | Joe C. Machuca, Gary M. Robb, Steven G. Goebel | 2013-05-28 |
| 8057942 | Assisted stack anode purge at start-up of fuel cell system | Joe C. Machuca, Gary M. Robb, Steven G. Goebel | 2011-11-15 |
| 7879503 | Fuel cell stack including bypass | Seth Valentine, Sitima Fowler, Steven L. Piedmont | 2011-02-01 |
| 4909000 | Folding grandstand | — | 1990-03-20 |
| 4640469 | System for rolling and unrolling a ground cover | — | 1987-02-03 |
| 4274503 | Power operated wheelchair | — | 1981-06-23 |