Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10956663 | Controlling digital input | Francis Zhou, Xiao Tu, David W. Duhon, David Abzarian | 2021-03-23 |
| 10930045 | Digital ink based visual components | Robert C. Houser, Pavel Yurevich, Peter Hammerquist, David Abzarian, Xiao Tu | 2021-02-23 |