Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7473393 | Method for discharging reduced product from a movable-hearth furnace and a discharging device | Natsuo Ishiwata, Tatsuya Ozawa, Yoshitaka Sawa, Tetsuya Yamamoto, Kanji Takeda | 2009-01-06 |
| 7141205 | Method for discharging reduced product from a movable-hearth furnace and a discharging device | Natsuo Ishiwata, Tatsuya Ozawa, Yoshitaka Sawa, Tetsuya Yamamoto, Kanji Takeda | 2006-11-28 |
| 6872074 | Method for discharging reduced product from a movable-hearth furnace and a discharging device | Natsuo Ishiwata, Tatsuya Ozawa, Yoshitaka Sawa, Tetsuya Yamamoto, Kanji Takeda | 2005-03-29 |
| 6270552 | Rotary hearth furnace for reducing oxides, and method of operating the furnace | Kanji Takeda, Yoshitaka Sawa, Tetsuya Yamamoto | 2001-08-07 |