Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5980629 | Methods for improving zero dislocation yield of single crystals | Richard L. Hansen, Larry E. Drafall, John D. Holder, Leon A. Allen, Robert D. Shelley | 1999-11-09 |
| 5976247 | Surface-treated crucibles for improved zero dislocation performance | Richard L. Hansen, Larry E. Drafall, John D. Holder, Leon A. Allen, Robert D. Shelley | 1999-11-02 |