Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5290324 | Coal-water mixture using upgraded low-rank coal and process for producing said mixture | Chikao Yokokawa | 1994-03-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5290324 | Coal-water mixture using upgraded low-rank coal and process for producing said mixture | Chikao Yokokawa | 1994-03-01 |