Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6497199 | Catalytic combustion heat exchanger | Shoji Hirose, Mitsuo Inagaki, Shigeru Ogino | 2002-12-24 |
| 6397787 | Catalytic combustion heater | Shoji Hirose, Shigeru Ogino | 2002-06-04 |
| 6352054 | Catalytic combustion heater | Shoji Hirose, Shigeru Ogino | 2002-03-05 |
| 6167846 | Catalytic combustion heater | Shigeru Ogino, Shoji Hirose | 2001-01-02 |