Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6698507 | Aluminum alloy heat exchanger resistive to tobacco odor impregnation | Kazunari Hamamura, Kengo Kobayashi, Hiroyoshi Sugawara, Kazuhisa Uchiyama | 2004-03-02 |
| 6689481 | Aluminum alloy heat exchanger resistive to tobacco odor impregnation | Kazunari Hamamura, Kengo Kobayashi, Hiroyoshi Sugawara, Kazuhisa Uchiyama | 2004-02-10 |