Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4389219 | Stabilized coal-oil mixture | Akihiro Naka | 1983-06-21 |
| 4251229 | Stabilized fuel slurry | Akihiro Naka, Kaoru Aoike | 1981-02-17 |
| 4195975 | Stabilized fuel slurry | Yasumasa Hamuro, Akihiro Naka | 1980-04-01 |