Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5677617 | Micro power supply device using switching element | Toshiro Sato | 1997-10-14 |
| 5593517 | Regenerating material and refrigerator using the same | Akiko Saito, Masashi Sahashi, Akihiko Tsutai, Masami Okamura, Yukiko Nishiyama +1 more | 1997-01-14 |