Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5219807 | Burned high purity refractories with low soluble chromium | Dwight S. Whittemore | 1993-06-15 |
| 5206193 | High purity fused grain in the system Al.sub.2 O.sub.3 -Cr.sub.2 O.sub.3 -MGO | Albert L. Renkey | 1993-04-27 |
| 4792538 | Spall resistant chrome-alumina refractory brick | Dwight S. Whittemore | 1988-12-20 |
| 4290814 | High alumina brick | Donald O. McCreight | 1981-09-22 |