Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4640336 | Refractory for continuous casting | Kazumi Arakawa, Toshiyuki Hirao, Kenji Sugiura, Satoshi Kuroki, Sei Hiraki +1 more | 1987-02-03 |
| 4532919 | Shoulder patting means | Shoji Iwahashi | 1985-08-06 |