Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4941326 | Air conditioner having outdoor air introducing mechanism | Toyo Sumi, Keiji Sato, Yoshiki Hayata | 1990-07-17 |
| 4527125 | Flame detecting apparatus | Kenzi Toudo, Toshiaki Sagawa | 1985-07-02 |
| 4522337 | Digital control circuit | Kenzi Toudo | 1985-06-11 |
| 4494924 | Flame detector for pulse combustion apparatus | Toshio Tanaka, Shigekichi Kochiyama | 1985-01-22 |
| 4474548 | Combustion controlling apparatus | Kenzi Toudo | 1984-10-02 |
| 4404616 | Igniting and flame detecting device | Kenzi Toudo | 1983-09-13 |
| 4370126 | Combustion control apparatus | Kenzi Toudo, Yoshinori KUDO, Sumio Nakagawa | 1983-01-25 |
| 4311576 | Electric corrosion preventing apparatus | Kenzi Toudo, Ikuo Saeki, Yosiaki Nakaoka | 1982-01-19 |
| 4299556 | Timer circuit arrangement in digital combustion control system | Kenji Todo, Toshio Tanaka | 1981-11-10 |