Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6269867 | Condenser and power plant | Fumio Takahashi, Iwao Harada | 2001-08-07 |
| 5960867 | Condenser and power plant | Fumio Takahashi, Iwao Harada | 1999-10-05 |
| 5251690 | Apparatus for collecting cleaning bodies for tubular heat exchanger | Katsumoto Otake, Yoshio Sumiya, Shigeo Oda, Tokunori Matsushima, Takuya Sasaki +5 more | 1993-10-12 |
| 5205352 | Heat exchanger for condensing vapor into liquid phase, power generating plant using the heat exchanger and absorption refrigerator using the heat exchanger | Fumio Takahashi, Iwao Harada, Michihiko Aizawa | 1993-04-27 |
| 4917176 | Device for cleaning inner surfaces of heat exchanger tubes | Toshimasa Shimada, Katsuhei Tanemura, Katsumoto Otake, Shigeo Oda, Yoshio Sumiya | 1990-04-17 |