Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699675 | Heat exchanger and cooling apparatus mounted with the same | Toshitake Nagai, Yonezo Ikumi, Norio Sawada, Koji Sato, Masato Watanabe | 1997-12-23 |
| 5634352 | Refrigeration cycle using six-way change-over valve | Toshitake Nagai, Yonezo Ikumi, Norio Sawada, Koji Sato | 1997-06-03 |
| 5077845 | Bed with built-in commode | Kenki Tokunaga, Shin-ichi Akahira, Takeshi Itagaki, Kyuichi Kawashima | 1992-01-07 |