Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12342138 | Transducer apparatus: positioning and high signal-to-noise-ratio microphones | Joseph Sylvester Chang, Yin Sun, Tong Ge, Sebastian MingJie CHANG | 2025-06-24 |
| 11647330 | Transducer apparatus embodying non-audio sensors for noise-immunity | Joseph Sylvester Chang, Yin Sun, Sebastian MingJie CHANG, Tong Ge | 2023-05-09 |
| 11146884 | Transducer apparatus for high speech intelligibility in noisy environments | Joseph Sylvester Chang, Yin Sun, MingJie Sebastian Chang, Tong Ge | 2021-10-12 |
| 9859988 | Communications apparatus | Joseph Sylvester Chang, Tong Ge | 2018-01-02 |
| 8737630 | Acoustical measuring/estimation device | Joseph Sylvester Chang | 2014-05-27 |