Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6865878 | Hybrid rocket engine and method of propelling a rocket | Martin Chiaverini, Daniel J. Gramer | 2005-03-15 |
| 6601380 | Hybrid rocket engine and method of propelling a rocket | Martin Chiaverini, Daniel J. Gramer | 2003-08-05 |
| 6298659 | Vortex flow field and apparatus and method for producing the same | Martin Chiaverini, Daniel J. Gramer | 2001-10-09 |
| 6101808 | Cryogenic solid hybrid rocket engine and method of propelling a rocket | Eric E. Rice, Darin R. Kohles, Christopher P. St. Clair, Daniel J. Gramer | 2000-08-15 |
| 5010730 | Gas-fed hybrid propulsion system | John H. Beveridge | 1991-04-30 |
| 4901525 | Booster-sustainer rocket engine and method | John H. Beveridge | 1990-02-20 |