Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681785 | Castable refractory containing alumina coarse grains | Yusuke Urita, Minoru Kataoka, Hiroshi Kubota, Mitsuo Sugawara | 1997-10-28 |
| 5681786 | Castable refractory rich with alumina coarse grains | Yusuke Urita, Minoru Kataoka, Hiroshi Kubota, Mitsuo Sugawara | 1997-10-28 |