Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5619956 | Auxiliary power unit for hybrid electric vehicle | Eugene G. Shanks, Daniel A. Norrick | 1997-04-15 |
| 5606946 | Auxiliary power unit for a hybrid electric vehicle | Stanley E. Data, Mark S. Lent, Patrick A. O'Gorman, Thomas K. Rose, Eugene G. Shanks +1 more | 1997-03-04 |
| 5469820 | Auxiliary power unit for a hybrid electrical vehicle | Stanley E. Data, Mark S. Lent, Patrick A. O'Gorman, Thomas K. Rose, Eugene G. Shanks +1 more | 1995-11-28 |
| 5368000 | Engine efficiency improvement system | — | 1994-11-29 |