Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4792578 | Resin-bonded taphole mix | Gustav O. Hughes | 1988-12-20 |
| 4762811 | Castable refractory | John T. Vayda | 1988-08-09 |
| 4506025 | Silica castables | Thomas R. Kleeb, Donald O. McCreight | 1985-03-19 |
| 4292084 | Vibratable plastic refractory | Stephen W. Thrower, Thomas R. Kleeb | 1981-09-29 |