Issued Patents 2025
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12417753 | Kind of double-bars violin family without sound post | Haiou Jin, Nianbo Wu, Xinxi He, Xinzhi Zhu, Biying Li | 2025-09-16 |
| 12401938 | Full-frequency band high quality electronic products speaker with a bar and sound tunnels | Haiou Jin, Nianbo Wu, Xinxi He, Xinzhi Zhu, Biying Li | 2025-08-26 |
| 12363485 | Full-frequency band high quality MEMS microphone with a bar and sound tunnels | Haiou Jin, Nianbo Wu, Xinxi He, Xinzhi Zhu, Biying Li | 2025-07-15 |
| 12283260 | Grand piano soundboard with a bar and sound tunnels | Haiou Jin, Nianbo Wu, Xinxi He, Xinzhi Zhu, Biying Li | 2025-04-22 |
| 12212946 | Full-frequency band high quality speaker with a bar and sound tunnels | Haiou Jin, Nianbo Wu, Xinxi He, Xinzhi Zhu, Biying Li | 2025-01-28 |