Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5304331 | Method and apparatus for extruding bingham plastic-type materials | William K. Leonard, Donley D. Rowenhorst, Donald R. Winberg | 1994-04-19 |
| 5213591 | Abrasive grain, method of making same and abrasive products | Ahmet Celikkaya, Vernon M. Wald | 1993-05-25 |