Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6544909 | Single ply reinforced roofing membrane | Krishna Venkataswamy, Li-Ying Yang | 2003-04-08 |
| 6544911 | Fiber mats for materials of construction having improved tear strength and process for making same | Qinyun Peng | 2003-04-08 |
| 6536498 | Welding apparatus and method for joining roofing materials | Brian Duffy | 2003-03-25 |