Issued Patents 2019
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10483800 | Portable device, charging device for same, and charging system for portable device | Takezo Hatanaka | 2019-11-19 |
| 10320211 | Hearing aid and hearing-aid charging system | Takezo Hatanaka | 2019-06-11 |
| 10305328 | Wireless power transmission device capable of forming magnetic field space, and magnetic field space formation method | Takezo Hatanaka, Masami Inoue | 2019-05-28 |
| 10218223 | Portable device, charging system, and power source circuit substrate | Takezo Hatanaka | 2019-02-26 |