Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4495089 | Continuous process for the production of solvents for coal liquefaction | Hiroyuki Ihara, Kazuo Takahashi, Michiro Matsubara, Fumio Kumata | 1985-01-22 |
| 4309191 | Coal-oil mixture | Osamu Hiroya, Hiroyuki Ihara | 1982-01-05 |