Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5753572 | Castable and gunning composition with improved resistance to build-up and alkali infiltration | Mark C. Langenohl | 1998-05-19 |
| 5021374 | Dead-burned magnesite and magnesia-alumina spinel refractory composition | — | 1991-06-04 |
| 4833109 | Low thermal conductivity magnesite-spinel brick and method | Richard J. Knauss | 1989-05-23 |