Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10268443 | Earphone status detection method and terminal | Haitao Zhen, Wentao Yang | 2019-04-23 |
| 8755544 | Earphone power amplifier, working method, and mobile terminal equipment | Haitao Zhen, Xuxing Yan | 2014-06-17 |