Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880952 | Heat cooking oven having flat heater units on the outside of the walls thereof | Kazumi Hirai, Mitsuo Akiyoshi, Yoshio Mitsumoto | 1989-11-14 |
| 4745246 | High frequency heating apparatus with electric heating device | Kazumi Hirai, Mitsuo Akiyoshi, Yoshio Mitsumoto | 1988-05-17 |
| 4675507 | Heat cooking apparatus having a flat flexible heater | Mitsuo Akiyoshi, Kazumi Hirai, Yoshio Mitsumoto | 1987-06-23 |