Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5548174 | Steel rotor shafts of electric machines | Masao Siga, Takanobu Mori, Yutaka Fukui, Tatsuro Ishizuka | 1996-08-20 |
| 5437742 | Steel rotor shafts for electric machines | Masao Siga, Takanobu Mori, Yutaka Fukui, Tatsuro Ishizuka | 1995-08-01 |
| 5288455 | Steel for rotor shafts of electric machines and method and product thereof | Masao Siga, Takanobu Mori, Yutaka Fukui, Tatsuro Ishizuka | 1994-02-22 |