Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5984988 | Shaped abrasive particles and method of making same | Todd A. Berg, James G. Berg, William K. Leonard | 1999-11-16 |
| RE35570 | Abrasive article containing shaped abrasive particles | Todd A. Berg, David E. Broberg, James G. Berg | 1997-07-29 |
| 5366523 | Abrasive article containing shaped abrasive particles | Todd A. Berg | 1994-11-22 |
| 5304331 | Method and apparatus for extruding bingham plastic-type materials | William K. Leonard, Jerald A. Scherger, Donald R. Winberg | 1994-04-19 |
| 5201916 | Shaped abrasive particles and method of making same | Todd A. Berg, James G. Berg, William K. Leonard | 1993-04-13 |
| 4505720 | Granular silicon carbide abrasive grain coated with refractory material, method of making the same and articles made therewith | Thomas Gabor, David E. Broberg, Gunther H. Dierssen | 1985-03-19 |