Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10944392 | Switch circuit and power supply system | Katsuma Tsukamoto | 2021-03-09 |
| 10651837 | Power supply device | Katsuma Tsukamoto, Keisuke Wakazono | 2020-05-12 |
| 10181846 | Overcurrent protection circuit | Katsuma Tsukamoto | 2019-01-15 |
| 10135234 | Preventive apparatus | Katsuma Tsukamoto | 2018-11-20 |
| 10038316 | Semiconductor device | Katsuma Tsukamoto | 2018-07-31 |
| 7124841 | Crustal core sampler and method of coring crustal core sample using the same | Kazuyasu Wada, Tomoya Inoue, Masanori Kyo, Masaki Kawahara | 2006-10-24 |