Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8221931 | Solid polymer electrolyte fuel cell stack | Narutoshi Sugita, Takeshi Ushio | 2012-07-17 |
| 7297424 | Solid polymer electrolyte fuel cell stack | Narutoshi Sugita, Takeshi Ushio | 2007-11-20 |
| 7226688 | Fuel cell | Yosuke Fujii, Yoshinori Wariishi, Takaki Nakagawa, Hiroshi Shinkai, Katsumi Hayashi | 2007-06-05 |
| 7097927 | Fuel cell system | Narutoshi Sugita, Takeshi Ushio | 2006-08-29 |
| 6787262 | Fuel cell stack having intermediate plate for restricting movement of bolt members for fastening stacked body | Toshiya Wakahoi | 2004-09-07 |
| 6686085 | Fuel cell | Yosuke Fujii, Yoshinori Wariishi, Takaki Nakagawa, Hiroshi Shinkai, Katsumi Hayashi | 2004-02-03 |
| 6613470 | Solid polymer electrolyte fuel cell stack | Narutoshi Sugita, Takeshi Ushio | 2003-09-02 |
| 6455179 | Fuel cell system | Narutoshi Sugita, Takeshi Ushio | 2002-09-24 |
| D431524 | Fuel cell | Narutoshi Sugita | 2000-10-03 |