Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5347023 | Process for treating fatty acids | Antonius J. M. Heynen | 1994-09-13 |
| 5216199 | Lead-free primed rimfire cartridge | Robert K. Bjerke, Kenneth P. Kees, Walter H. Stevens | 1993-06-01 |
| 4963201 | Primer composition | Robert K. Bjerke, Delbert O. Ells, Kenneth P. Kees | 1990-10-16 |
| 4722580 | Two way cover assembly | Timothy Lee Kocher, Lahman D. Lambert, II, Earl W. McCleerey | 1988-02-02 |
| 4608102 | Primer composition | Adalbert A. Krampen, Delbert O. Ells, Robert K. Bjerke | 1986-08-26 |