Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5770536 | Fiber reinforced spray mix | — | 1998-06-23 |
| 5190899 | High alumina refractory shapes | — | 1993-03-02 |
| 4909484 | Prevention of slag buildup in steel ladles | Edward L. Erny | 1990-03-20 |
| 4759533 | Heat-insulating boards | Leigh F. Brooks | 1988-07-26 |
| 4495301 | Insulating refractories | — | 1985-01-22 |