Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9967513 | Password control for multi-room digital video recorder | Hui Zhao | 2018-05-08 |
| 8385722 | Modular digital video recorder storage | Lisa A. Pickelsimer, Yousef Wasef Nijim, Hui Zhao | 2013-02-26 |
| 7941816 | Detection of media links in broadcast signals | David H. Harkness, Daozheng Lu, William A. Feininger | 2011-05-10 |
| 7757248 | Detection of media links in broadcast signals | David H. Harkness, Daozheng Lu, William A. Feininger | 2010-07-13 |
| 7421723 | Detection of media links in broadcast signals | David H. Harkness, Daozheng Lu, William A. Feininger | 2008-09-02 |