Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5397110 | Refractory brick and method of making and using same | David E. Shewmon | 1995-03-14 | |
| 4407972 | Erosion-resistant refractory | — | 1983-10-04 | $9,365,000 |
| 4196894 | Basic oxygen furnace and refractories therefor having improved thermal conductivity | — | 1980-04-08 | $5,819,000 |