Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881951 | Abrasive grits formed of ceramic containing oxides of aluminum and rare earth metal, method of making and products made therewith | Larry D. Monroe | 1989-11-21 |
| 4855264 | Aluminum oxide/aluminum oxynitride/group IVB metal nitride abrasive particles derived from a sol-gel process | James P. Mathers, Thomas E. Forester | 1989-08-08 |