Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10212521 | Method of manufacturing a sound transducer | Shengrong Shi, Jian Guo, Oscar Lopez | 2019-02-19 |
| 9948342 | Speaker casing with integrally formed electrical conductors | Shengrong Shi, Hongjie Li | 2018-04-17 |
| 9584921 | Sound transducer | Shengrong Shi, Jian Guo, Oscar Lopez | 2017-02-28 |