Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6269782 | Water-tube boiler | Toshihiro Kayahara, Akinori Kawakami, Takashi Morimatsu, Koichi Wakae, Tomohiro Ookubo +1 more | 2001-08-07 |
| 6116196 | Water-tube boiler | Shigehiro Watanabe, Noboru Takubo | 2000-09-12 |
| 6041743 | Water-tube boiler and burner | Noboru Takubo | 2000-03-28 |
| 6029614 | Water-tube boiler with re-circulation means | Toshihiro Kayahara, Noboru Takubo | 2000-02-29 |