Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844863 | Method of producing clad metal | Hiroyuki Ogawa, Hiroyuki Homma, Saburo Kitaguchi, Hiroshi Morimoto, Satoshi Araki | 1989-07-04 |
| 4842816 | High toughness steel | Hiroyo Haga, Takeshi Terasawa | 1989-06-27 |