Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4335081 | Crystal growth furnace with trap doors | Brian H. Mackintosh | 1982-06-15 |
| 4318769 | Method of monitoring crystal growth | — | 1982-03-09 |
| 4277441 | Apparatus for monitoring crystal growth | — | 1981-07-07 |
| 4242589 | Apparatus for monitoring crystal growth | — | 1980-12-30 |