Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5045277 | Method of producing metal carbide grade powders and controlling the shrinkage of articles made therefrom | Joseph J. Penkunas | 1991-09-03 |
| 5007957 | Method for producing tungsten carbide grade powders suitable for isostatic compaction | Joseph J. Penkunas | 1991-04-16 |
| 4902471 | Method for producing metal carbide grade powders | Joseph J. Penkunas | 1990-02-20 |
| 4886638 | Method for producing metal carbide grade powders | Joseph J. Penkunas, Jack Burwick | 1989-12-12 |