Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4401278 | Apparatus for granulating coal | Etsuo Ogino, Kazuo Harada | 1983-08-30 |
| 4346010 | Process for recovering fine coal particles from slurry of finely divided coal | Etsuo Ogino, Kazuo Harada | 1982-08-24 |