Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4314898 | Process for reforming coal | Yukio Nakako, Toshio Ohzawa, Masaaki Tamura | 1982-02-09 |
| 4219403 | Coal liquefaction process and apparatus therefor | Yukio Nakako | 1980-08-26 |
| 4185395 | Method for thermal dehydration of brown coal | Yukio Nakako, Kenjiro Motonaga, Junichiro Nada, Toshio Ohzawa, Haruo Kakunai | 1980-01-29 |