Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10356541 | Loudspeaker diaphragm state estimation method and loudspeaker driving circuit using the same | Hejinsheng Cao | 2019-07-16 |
| 10051394 | Loudspeaker diaphragm state estimation method and loudspeaker driving circuit using the same | Hejinsheng Cao | 2018-08-14 |