Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D452730 | Oil-fired space heater | — | 2002-01-01 |
| D452731 | Oil-fired space heater | — | 2002-01-01 |
| D336816 | Portable cooking and heating stove | — | 1993-06-29 |
| 5070027 | Method of forming a heterostructure diode | Masatoshi Kitagawa, Takashi Hirao, Yoshitake Yasuno, Ryuma Hirano | 1991-12-03 |
| D310408 | Oil fired space heater | — | 1990-09-04 |
| D305260 | Electric radiant heater | — | 1989-12-26 |
| 4872829 | Fire-extinguishing device for oil burner | Kazuharu Nakamura, Yutaka Nakanishi, Toshihiko Yamada, Kenji Nakamura, Kiyonobu Itoh | 1989-10-10 |
| D301163 | Oil-fired space heater or similar article | — | 1989-05-16 |
| 4810185 | Fire-extinguishing device for oil burner | Kazuharu Nakamura, Yutaka Nakanishi, Toshihiko Yamada, Kenji Nakamura, Kiyonobu Itoh | 1989-03-07 |
| 4797088 | Safety device for oil burner | Kazuharu Nakamura, Yutaka Nakanishi, Toshihiko Yamada, Yuji Sanada | 1989-01-10 |
| 4775437 | Process of forming cylinder wall of burning cylinder for use in heating apparatus | Kazuharu Nakamura, Yukihiro Oguchi | 1988-10-04 |
| 4740153 | Fire-extinguishing device for oil burner | Kazuharu Nakamura, Yutaka Nakanishi | 1988-04-26 |
| 4611574 | Protective guard for oil burner | Kazuharu Nakamura, Kazuhiko Takeuchi | 1986-09-16 |
| 4569652 | Combustion cylinder construction for oil space heater | Kazuharu Nakamura, Yutaka Nakanishi | 1986-02-11 |
| 4424019 | Device for vertically moving the wick of an oil burner | Kazuharu Nakamura, Akiyoshi Okayasu, Kazuhiko Takeuchi | 1984-01-03 |
| 4390003 | Petroleum combustion device | Kazuharu Nakamura, Yutaka Nakanishi, Toshihiko Yamada | 1983-06-28 |