Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6412290 | Cryogenic refrigerating device | Nobuo Okumura | 2002-07-02 |
| 5208498 | Linear actuator | — | 1993-05-04 |
| 5174117 | Free piston Stirling engine | Yoshihiro Naito, Yoshihiro Naruse | 1992-12-29 |
| 4924123 | Linear generator | Yukio Inaguma | 1990-05-08 |