Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5418199 | Refractory mix and shapes made therefrom | — | 1995-05-23 |
| 5344802 | MgO-spinel refractory mix and shapes made therefrom | — | 1994-09-06 |
| 4954463 | Magnesium aluminate spinel refractory | — | 1990-09-04 |
| 4847222 | Basic refractory shapes | David J. Michael | 1989-07-11 |
| 4833109 | Low thermal conductivity magnesite-spinel brick and method | Christopher L. Macey | 1989-05-23 |