Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4347614 | Apparatus for refining ferrosilicon | Yoshiyuki Nakamura, Seiichi Matsubara, Takashi Matsui, Taiji Kumagai, Taizo Senga | 1982-08-31 |
| 4255184 | Method and apparatus for refining ferrosilicon | Yoshiyuki Nakamura, Seiichi Matsubara, Takashi Matsui, Taiji Kumagai, Taizo Senga | 1981-03-10 |