Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874427 | Methods for melting and refining a powdery ore containing metal oxides | Takao Hamada, Nobuo Tsuchiya, Eiji Katayama, Toshimitsu Koitabashi, Kyoji Okabe +2 more | 1989-10-17 |
| 4733619 | Powder feeder | Sadahiko Maeda, Yasumasa Idei, Mitsuo Sumito, Takao Hamada, Shunji Hamada | 1988-03-29 |
| 4505745 | Methods of producing and using amorphous mother alloy | Takao Hamada, Nobuo Tsuchiya, Yo Ito, Yoshiyasu Takada, Mitsuo Sumito +2 more | 1985-03-19 |
| 4397691 | Method for producing Fe-B molten metal | Takao Hamada, Nobuo Tsuchiya, Yoshiyasu Takada, Mitsuo Sumito, Eiji Katayama +3 more | 1983-08-09 |