Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8858708 | Polycrystalline III-nitrides | Michael Callahan, John S. Bailey | 2014-10-14 |
| 8236102 | Hydrothermal methods of fabricating trivalent-metal-ion-doped sapphire crystals | David F. Bliss, Michael Callahan | 2012-08-07 |