Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4326946 | Process for manufacture of solvent for coal liquefaction | Yoshihiko Sunami, Keiichi Sasaki, Kunihiko Nishioka | 1982-04-27 |
| 4303498 | Process for manufacture of solvent for coal liquefaction | Yoshihiko Sunami, Keiichi Sasaki, Kunihiko Nishioka | 1981-12-01 |