Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10258546 | Tooth whitening strip | Thomas Boyd, Guofeng Xu, Richard Adams, Robert Pierce, David Viscio | 2019-04-16 |
| 10238590 | Liquid activation system | Guofeng Xu, Jennifer Gronlund | 2019-03-26 |