Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821790 | Apparatus for pouring molten metal | Shuzo Takahashi, Shiro Osada, Hisashi Sato, Akichika Ozeki, Nobuhisa Hasebe | 1989-04-18 |
| 4807692 | Mold apparatus for endless track type continuous casting machine | Shuzo Takahashi, Shiro Osada, Nobuhisa Hasebe | 1989-02-28 |
| 4806178 | Non-heat refined steel bar having improved toughness | Yoshiro Koyasu, Nobukazu Suzuki | 1989-02-21 |