Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7901778 | Weatherable multilayer film | Gwo S. Swei, Kevin George Hetzler | 2011-03-08 |
| 7641964 | Roofing membrane | Gwo S. Swei, Maryann C. Kenney, David J. Bravet | 2010-01-05 |
| 7297391 | Draw resonance resistant multilayer films | Kevin George Hetzler, Gordon V. Sharps, Jr. | 2007-11-20 |
| 7267865 | Draw resonant resistant multilayer films | Kevin George Hetzler, Xixian Zhou | 2007-09-11 |