Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5322548 | Recovery of niobium metal | Bernard F. Kieffer, John R. Peterson, Timothy R. McQueary, Matthew A. Rossback | 1994-06-21 |
| 5284639 | Method for the preparation of niobium nitride | James Sommers | 1994-02-08 |