Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10131858 | Method for manufacturing ashless coal | Koji Sakai, Takuya Yoshida, Shigeru Kinoshita | 2018-11-20 |
| 10035967 | Method for producing ash-free coal | Takuya Yoshida, Shigeru Kinoshita, Koji Sakai | 2018-07-31 |
| 9938477 | Ashless-coal production device, and ashless-coal production method | Koji Sakai, Takuya Yoshida, Shigeru Kinoshita, Maki Hamaguchi | 2018-04-10 |