Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6410172 | Articles coated with aluminum nitride by chemical vapor deposition | — | 2002-06-25 |
| 6140624 | Pyrolytic boron nitride radiation heater | — | 2000-10-31 |
| 5977526 | Heater for high vacuum optical view port | Terry J. Mattord | 1999-11-02 |
| 5343022 | Pyrolytic boron nitride heating unit | Timothy J. Hejl | 1994-08-30 |
| 5277934 | Method for protecting a graphite chuck for a starter filament in the manufacture of polycrystalline silicon | John B. Hedge, Paul J. Walsh | 1994-01-11 |