Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6615591 | Cryogenic refrigeration system | Shigehisa Kusada, Tomoyuki Motoyoshi, Keiji Tomioka | 2003-09-09 |
| 6609383 | Cryogenic refrigeration system | Shigehisa Kusada, Tomoyuki Motoyoshi, Keiji Tomioka | 2003-08-26 |