Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5232468 | Abrasive products bonded with color stabilized base catalyzed phenolic resin | David E. Broberg | 1993-08-03 |
| 5219463 | Abrasives containing ammonium fluoride-based grinding aid | David E. Broberg | 1993-06-15 |
| 5110320 | Abrasive products bonded with color stabilized base catalyzed phenolic resin | David E. Broberg | 1992-05-05 |
| 5110321 | Abrasives containing ammonium fluoride-based grinding aid | David E. Broberg | 1992-05-05 |