Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10644615 | Electrostatic induction generator | Yoichi Nagata, Akira Shiota, Makoto Watanabe, Akira Izumi | 2020-05-05 |
| 10566913 | Power generation device and portable electric device | Kensaku Matsumoto, Makoto Watanabe, Akira Izumi | 2020-02-18 |