Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11981061 | Preparation method of a passive horn | Shuhong Cen | 2024-05-14 |
| 11780131 | Passive horn integrally formed by using thermoplastic vulcanized rubber and preparation method thereof | Shuhong Cen | 2023-10-10 |
| 11338483 | Passive horn integrally formed by using thermoplastic vulcanized rubber and preparation method thereof | Shuhong Cen | 2022-05-24 |
| 11155718 | Light reflective coating for audio product and preparation method thereof | Xiaochun Guo, Liwen Tan | 2021-10-26 |
| 6416650 | Apparatus and method of electrochemical polishing by ring-form electrode | — | 2002-07-09 |