Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6021846 | Duplex heat exchanger | Hironaka Sasaki, Hirohiko Watanabe, Tetsuya Tategami | 2000-02-08 |
| 5743328 | Duplex heat exchanger | Hironaka Sasaki, Hirohiko Watanabe, Tetsuya Tategami | 1998-04-28 |
| 5529116 | Duplex heat exchanger | Hironaka Sasaki, Hirohiko Watanabe, Tetsuya Tategami | 1996-06-25 |