Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837187 | Alumina-based core containing yttria | Gregory R. Frank, Kenneth A. Canfield | 1989-06-06 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837187 | Alumina-based core containing yttria | Gregory R. Frank, Kenneth A. Canfield | 1989-06-06 |