Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4891064 | Method of melting cold material including iron | Kazushige Umezawa, Tetsuya Oh-hara, Tsuzuru Nuibe, Kousaku Ozawa | 1990-01-02 |
| 4358313 | Process for refining molten pig iron and steel | Masataka Yoshii, Mitsugu Anabuki, Yasuo Obana, Takuo Kono | 1982-11-09 |