Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11743648 | Control leak implementation for headset speakers | Tetsuro Oishi, Rex Price, Limin Zhou, Michael Thomas Frank, Joshua James Barr | 2023-08-29 |
| 11540055 | Control leak implementation for headset speakers | Tetsuro Oishi, Rex Price, Limin Zhou, Michael Thomas Frank, Joshua James Barr | 2022-12-27 |
| 5978460 | Coin telephone data port protection | Daniel W. Macauley | 1999-11-02 |
| 4441697 | Silver recovery unit | Donny L. Peterson | 1984-04-10 |