Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6815107 | Gas leak detection method for fuel cell | Shigeru Inai, Katsumi Hayashi, Minoru Koshinuma | 2004-11-09 |
| 6771041 | Cell voltage measuring device for fuel cell | Masahiko Sato, Hideaki Kikuchi, Toshiaki Ariyoshi | 2004-08-03 |
| 6686085 | Fuel cell | Noriaki Osao, Yoshinori Wariishi, Takaki Nakagawa, Hiroshi Shinkai, Katsumi Hayashi | 2004-02-03 |
| 6674264 | Cell voltage detector for fuel cell | Masahiko Sato, Hideaki Kikuchi, Toshiaki Ariyoshi | 2004-01-06 |