Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5033673 | Hot water circulating system | — | 1991-07-23 |
| 4921166 | Hot water circulating system | Kouichi Watanabe | 1990-05-01 |
| 4915296 | Hot water circulating system | Kouichi Watanabe | 1990-04-10 |
| 4767316 | Fuel supply system for oil burner | Kazuharu Nakamura, Osamu Niwa, Yoshimasa Tsuboi | 1988-08-30 |
| 4710125 | Safety device for oil burner | Kazuharu Nakamura, Akinobu Kondo, Kiyonobu Ito | 1987-12-01 |
| 4588371 | Safety device for pot-type oil burner | Kazuharu Nakamura, Tooru Yoshino, Osamu Niha | 1986-05-13 |
| 4545758 | Pot-type oil burner | Kazuharu Nakamura, Tooru Yoshino, Yoshimasa Tsuboi | 1985-10-08 |
| 4544349 | Oil burner comprising safeguard mechanism against power stoppage | Kazuharu Nakamura | 1985-10-01 |
| 4543057 | Pot-type oil burner | Kazuharu Nakamura, Tooru Yoshino | 1985-09-24 |
| 4528974 | Protective guard for combustion appliance | Kazuharu Nakamura, Osamu Niha, Yoshio Suzuki | 1985-07-16 |
| 4413612 | Red-hot type oil burner | Kazuharu Nakamura, Yoshimasa Tsuboi, Akinobu Kondo, Yoshitaka Kataoka | 1983-11-08 |
| 4363621 | Oil burner of type of pumping up fuel oil | Kazuharu Nakamura, Akinobu Kondo | 1982-12-14 |