Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5620936 | Recovery of spent catalyst | Vinci Martinez Felix, Norman A. Carlson | 1997-04-15 |
| 5171379 | Tantalum base alloys | Prabhat Kumar | 1992-12-15 |
| 4684399 | Tantalum powder process | Roger M. Bergman | 1987-08-04 |