Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9932477 | Roofing asphalt composition | Hua Liu, Rene Dufresne | 2018-04-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9932477 | Roofing asphalt composition | Hua Liu, Rene Dufresne | 2018-04-03 |