Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5556436 | Solid fuel made from porous coal and production process and production apparatus therefore | Kazuhito Yagaki, Takuo Shigehisa, Tetsuya Deguchi | 1996-09-17 |
| 5554201 | Thermal treated coal, and process and apparatus for preparing the same | Kazuhito Yagaki, Takuo Shigehisa, Tetsuya Deguchi | 1996-09-10 |
| 5269910 | Method of coil liquefaction by hydrogenation | Tetsuo Matsumura, Kaizaburo Saito, Hiroshi Yoshimura, Yasuo Sugino, Shun YANAI +3 more | 1993-12-14 |
| 4565622 | Method of liquefying brown coal | Yukio Nakako, Tetsuo Matsumura, Toshio Ozawa, Kaizaburo Saito, Shin-ichi Katsushima +4 more | 1986-01-21 |