Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6139612 | Asphalt paving mix formed of recycled asphalt concrete for paving at ambient temperatures and a process for making the same | Terutaka Kitagawa | 2000-10-31 |
| 5290324 | Coal-water mixture using upgraded low-rank coal and process for producing said mixture | Sadao Wasaka | 1994-03-01 |