Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5611825 | Abrasive articles and methods of making same | Robbyn L. Engen | 1997-03-18 |
| 5551961 | Abrasive articles and methods of making same | Robbyn L. Engen, Douglas S. Spencer | 1996-09-03 |
| 5486219 | Coatable urea-aldehyde solutions containing a cocatalyst, coated abrasives made using said solutions, and method of making coated abrasives | Ellen Y. Chu, Harold E. Rude | 1996-01-23 |