Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10407744 | Production method of granular metallic iron | Shorin O | 2019-09-10 |
| 8617459 | Method and apparatus for manufacturing granular metallic iron | Koji Tokuda, Shoichi Kikuchi | 2013-12-31 |
| 8377169 | Method and apparatus for manufacturing granular metallic iron | Koji Tokuda, Shoichi Kikuchi | 2013-02-19 |
| 8157888 | Process for producing molten iron | Itsuo Miyahara, Koji Tokuda | 2012-04-17 |
| 7938883 | Method and apparatus for making metallic iron | Takuya Negami, Kazuo Kunii, Shinichi Inaba, Masataka Shimizu, Isao Kobayashi +7 more | 2011-05-10 |
| 7806959 | Metallic iron nuggets | Yasuhiro Tanigaki, Isao Kobayashi, Osamu Tsuge, Keisuke Honda, Koji Tokuda +1 more | 2010-10-05 |
| 7674316 | Method for producing metallic iron | Osamu Tsuge, Yasuhiro Tanigaki, Isao Kobayashi, Koji Tokuda, Shoichi Kikuchi | 2010-03-09 |
| 7438730 | Method of producing iron oxide pellets | Yasuhiko Igawa, Jun Jimbo, Hidetoshi Tanaka, Shoichi Kikuchi, Takao Harada +2 more | 2008-10-21 |
| 6689182 | Method and device for producing molten iron | Koji Tokuda, James C. Simmons, Robert F. Edgar | 2004-02-10 |
| 6630010 | Method of producing metallic iron | Yasuhiro Tanigaki, Shoichi Kikuchi, Osamu Tsuge, Isao Kobayashi, Keisuke Honda +2 more | 2003-10-07 |
| 6592649 | Method of producing iron nuggets | Shoichi Kikuchi, Yasuhiro Tanigaki, Koji Tokuda, Osamu Tsuchiya | 2003-07-15 |
| 6569223 | Method of manufacturing molten metal iron | Yasuhiro Tanigaki, Osamu Tsuge, Isao Kobayashi, Keisuke Honda, Koji Tokuda +1 more | 2003-05-27 |
| 6506231 | Method and apparatus for making metallic iron | Takuya Negami, Kazuo Kunii, Shinichi Inaba, Masataka Shimizu, Isao Kobayashi +7 more | 2003-01-14 |
| 6432533 | Metallic iron containing slag | Takuya Negami, Kazuo Kunii, Shinichi Inaba, Masataka Shimizu, Isao Kobayashi +7 more | 2002-08-13 |
| 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 |
| 6284018 | Method of making iron and steel | Akira Uragami, Koji Tokuda | 2001-09-04 |
| 6210462 | Method and apparatus for making metallic iron | Shoichi Kikuchi, Akira Uragami, Isao Kobayashi, Yasuhiro Tanigaki, Eiichi Ito +2 more | 2001-04-03 |
| 6149709 | Method of making iron and steel | Akira Uragami, Koji Tokuda | 2000-11-21 |
| 6036744 | Method and apparatus for making metallic iron | Takuya Negami, Kazuo Kunii, Shinichi Inaba, Masataka Shimizu, Isao Kobayashi +7 more | 2000-03-14 |
| 4908059 | Process for melting cold iron material | Akihide Hikosaka, Tsuyoshi Mimura, Tomio Suzuki, Takeo Yoshigae | 1990-03-13 |
| 4442706 | Probe and a system for detecting wear of refractory wall | Yoshio Kawate, Nobuyuki Nagai, Takefumi Horiuchi, Saburo Tsurutani, Minoru Kitamura +3 more | 1984-04-17 |
| 4417723 | Tuyere for blowing gases into molten metal bath container | Minoru Kitamura, Shinji Koyama, Masahiko Ohgami, Hideo Matsui, Isamu Hirose +2 more | 1983-11-29 |
| 4398949 | Method for stably refining high carbon steel | Minoru Kitamura, Shinji Koyama, Masahiko Ohgami, Hideaki Fujimoto | 1983-08-16 |