Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7438730 | Method of producing iron oxide pellets | Yasuhiko Igawa, Hidetoshi Tanaka, Shoichi Kikuchi, Takao Harada, Osamu Tsuchiya +2 more | 2008-10-21 |
| 6811759 | Method of producing iron oxide pellets | Osamu Tsuchiya, Hidetoshi Tanaka, Takao Harada, Shoichi Kikuchi, Yasuhiko Igawa | 2004-11-02 |
| 6579505 | Method of producing iron oxide pellets | Osamu Tsuchiya, Hidetoshi Tanaka, Takao Harada, Shoichi Kikuchi, Yasuhiko Igawa | 2003-06-17 |