Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11247014 | Oxygen concentrator | Ryo Koizumi | 2022-02-15 |
| 8677998 | Oxygen concentrator | Hisashi Kiriake | 2014-03-25 |
| 8523500 | Machine tool including a Z-table and processing spindle rotatably supported on a rotation arm | Tatsuya Koizumi, Taro Nakamura, Katsumune Inaki, Motoki Uchikawa, Kouichi Tanizaki +4 more | 2013-09-03 |