Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4900330 | Process for producing a high concentration coal-water slurry | Yoshinori Ohtani, Hirofumi Kikkawa, Hiroshi Terada, Masayasu Murata, Nobuyasu Meguri | 1990-02-13 |
| 4786289 | Process for producing a coal-water slurry | Hirofumi Kikkawa, Hiroshi Takezaki, Yoshinori Ohtani | 1988-11-22 |
| 4747548 | Process for producing a high concentration coal-water slurry | Hirofumi Kikkawa, Yasuyuki Nishimura | 1988-05-31 |
| 4613084 | Process for producing a coal-water slurry | Shigehito Takamoto, Nobuyasu Meguri, Yoshinori Ohtani, Hirofumi Kikkawa, Yasuyuki Nishimura +2 more | 1986-09-23 |