Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12118841 | IoT switchgear operation system using sound wave communication | — | 2024-10-15 |
| 11847632 | Sound wave payment system, magnetic field conversion device, and mobile terminal for sound wave payment technical field | Tae Hyun RYOO, Je Chul LEE, Mi Yeon Park, Su-Won Lee | 2023-12-19 |
| 11030611 | Short-range payment system using sound communication | — | 2021-06-08 |
| 10425184 | Device and method for sound wave communication | — | 2019-09-24 |