Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5622554 | Asphalt-based coating composition with alkoxylated amine-derived salt surfactant | Michael R. Sipe | 1997-04-22 |
| 5618340 | Asphalt-based coating composition with ether amine-acid-complex surfactant | Michael R. Sipe | 1997-04-08 |