Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8056776 | Refractory pouring tube with porous insert | Stephen Lee, Ian Proudfoot | 2011-11-15 |
| 5773503 | Compacted mineral filler pellet and method for making the same | William P. Steen | 1998-06-30 |