Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4292082 | Unshaped refractories | Shigeru Okuda, Eiichi Yorita | 1981-09-29 |
| 4279844 | Method for the repair of runner for molten metal | Masashi Mori | 1981-07-21 |
| 4261752 | Gunning refractories | Eiichi Yorita, Shojiro Sawada, Fumiyoshi Hashimoto | 1981-04-14 |