Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8069905 | EGR gas cooling device | — | 2011-12-06 |
| 7614443 | Heat exchanger tube | Shoichiro Usui, Koichi Hayashi | 2009-11-10 |
| 7303002 | Fin structure, heat-transfer tube having the fin structure housed therein, and heat exchanger having the heat-transfer tube assembled therein | Shoichiro Usui | 2007-12-04 |