Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4356271 | Noncollapsible ceramic foam | Thomas Francis, John E. Marhanka | 1982-10-26 |
| 4246035 | High purity mortar suitable for bonding refractory brick | George Maczura, Frank J. Rohr | 1981-01-20 |