Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7438313 | Compact multi-level output gas generator | Scott Colburn, C. Husband, Robert Rovito, Samuel Hancock | 2008-10-21 |
| 6213503 | Multi-level output air bag inflator | Robert Zimbrich, Charles D. Rodgers, Andrew C. Kohl, Donald W. Renfroe, Richard K. Robbins +1 more | 2001-04-10 |
| 5763817 | Center gas fill inflator | Donald W. Renfroe, Michael Womack, Venny Sneed | 1998-06-09 |
| 5660412 | Hybrid inflator | Donald W. Renfroe, Roy G. Brown, Richard L. Frantom, Steven L. Ludeke, Richard K. Robbins +2 more | 1997-08-26 |
| 5659295 | Sliding piston pressure sensing device | Donald W. Renfroe, Steven L. Ludeke, James Rose | 1997-08-19 |