Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4923490 | Novel grinding wheels utilizing polycrystalline diamond or cubic boron nitride grit | Harold P. Bovenkerk | 1990-05-08 |
| 4883500 | Sawblade segments utilizing polycrystalline diamond grit | Martin E. Deakins, David E. Slutz, Thomas J. Clark, Harold P. Bovenkerk | 1989-11-28 |