Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9959526 | Method and apparatus for incorporating user interaction based presence in email systems | Matthew Kuhlke, Ethan Hugg, Chin-Ju Chen | 2018-05-01 |
| 8280052 | Digital signature of changing signals using feature extraction | Chin-Ju Chen, Matthew Kuhlke, Ethan Hugg, Michael A. Ramalho | 2012-10-02 |