Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6626966 | Coal briquette and production thereof | Katsunori Shimasaki, Tetsuya Deguchi, Satoru Sugita | 2003-09-30 |
| 6592646 | Method of producing direct reduced iron with use of coal-derived gas and apparatus | Takuo Shigehisa, Jinichi Tomuro | 2003-07-15 |