Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7685784 | Cool roof covering and adhesive therefor | Ge Wang, Richard Lee | 2010-03-30 |
| 5253461 | Fastener-free roofing system and method | Ronald J. Janoski, Rick Gibson, Donald C. Portfolio | 1993-10-19 |
| 5254167 | Adhesive application apparatus | Ronald J. Janoski, Richard J. Gibson, Donald C. Portfolio, Todd Hadaway | 1993-10-19 |