Issued Patents 2019
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10336906 | Use of an ester additive and paving grade asphalt in built up roofing asphalt composition manufacture | Laurand Henry Lewandowski, Robert E. Quinn | 2019-07-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10336906 | Use of an ester additive and paving grade asphalt in built up roofing asphalt composition manufacture | Laurand Henry Lewandowski, Robert E. Quinn | 2019-07-02 |