Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4987113 | Preparation of coal liquefaction catalyst | Tatsuo Fukuyama, Toshihiko Okada, Yoshio Kamiya, Eisuke Ogata | 1991-01-22 |
| 4820405 | Method of liquefying coal | Tatsuo Fukuyama, Toshihiko Okada, Yoshio Kamiya, Eisuke Ogata | 1989-04-11 |