Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4698095 | Composite calcium clads for treating molten iron | Tohei Ototani | 1987-10-06 |
| 4671820 | Composite calcium clads for deoxidation and desulfurization from molten steels | Tohei Ototani | 1987-06-09 |