Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9310133 | Rotary hearth furnace exhaust gas duct apparatus and method for operating same | Noriaki Mizutani, Koji Tokuda | 2016-04-12 |
| 9180521 | Method for producing granular metallic iron | Ryota Misawa, Sumito Hashimoto | 2015-11-10 |
| 8915352 | Feeding system for reduced iron material | Tomoki Uemura | 2014-12-23 |
| 8187359 | Granulated metallic iron superior in rust resistance and method for producing the same | Koji Tokuda | 2012-05-29 |
| 8012236 | Method and apparatus for producing reduced metal | Koji Tokuda, Shoichi Kikuchi | 2011-09-06 |
| 7846235 | Method for producing metallic iron | Shoichi Kikuchi, Gilbert Y. Whitten, Brian Voelker | 2010-12-07 |
| 7806959 | Metallic iron nuggets | Shuzo Ito, Yasuhiro Tanigaki, Isao Kobayashi, Keisuke Honda, Koji Tokuda +1 more | 2010-10-05 |
| 7674316 | Method for producing metallic iron | Yasuhiro Tanigaki, Isao Kobayashi, Koji Tokuda, Shoichi Kikuchi, Shuzo Ito | 2010-03-09 |
| 6630010 | Method of producing metallic iron | Shuzo Ito, Yasuhiro Tanigaki, Shoichi Kikuchi, Isao Kobayashi, Keisuke Honda +2 more | 2003-10-07 |
| 6569223 | Method of manufacturing molten metal iron | Yasuhiro Tanigaki, Isao Kobayashi, Keisuke Honda, Koji Tokuda, Shoichi Kikuchi +1 more | 2003-05-27 |
| 6413295 | Iron production method of operation in a rotary hearth furnace and improved furnace apparatus | David C. Meissner, Glenn E. Hoffman, Kyle James Shoop, Takuya Negami, Akira Uragami +5 more | 2002-07-02 |
| 5930579 | Method for manufacturing reduced iron briquettes | Hiroshi Nagumo, Yutaka Inada, Yoshinori Kanno | 1999-07-27 |
| 5731272 | Lubricant and method of manufacturing briquette using the same | Yoshiro Tanaka, Masaki MIYAKE, Yutaka Inada, Coomarasamy Thirulingham | 1998-03-24 |