Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10669203 | System and method for manufacturing asphalt products with recycled asphalt shingles | Michael R. Franzen, David C. Trumbore, Laurand Henry Lewandowski, Herb Wissel, Barry Garriett Hornbacher +2 more | 2020-06-02 |
| 5976292 | Roofing seam installation process and products for the production of a seamed roof | Daniel Leon Barksdale, Joseph John Kalwara, James L. Hoff | 1999-11-02 |