Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6841138 | Method and device for temperature reduction of exhaust gas by making use of thermal water | Masayuki Kumada | 2005-01-11 |
| 6733735 | Method and device for temperature reduction of exhaust gas by making use of thermal water | Masayuki Kumada | 2004-05-11 |
| 6712343 | Method and device for temperature reduction of exhaust gas by making use of thermal water | Masayuki Kumada | 2004-03-30 |
| 6523811 | Method and device for temperature reduction of exhaust gas by making use of thermal water | Masayuki Kumada | 2003-02-25 |