Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12421892 | Hybrid turbine engine with selective electrical module engagement | Richard K. Keller | 2025-09-23 |
| 11628949 | Modular power units for aircraft | Stephen Andrew Long, Sean Guitar | 2023-04-18 |
| 11542032 | Method and tool for optimizing fuel/electrical energy storage allocation for hybrid-electric aircraft | Stephen Andrew Long, Sean Guitar, Michael J. Armstrong | 2023-01-03 |
| 10907494 | Parallel hybrid propulsion system | Stephen Andrew Long, Graham Burkholder | 2021-02-02 |