Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830840 | Operation method for polymer electrolytic fuel cell | Kazuhito Hatoh, Osamu Sakai, Junji Niikura, Hisaaki Gyoten, Toshihiro Matsumoto +1 more | 2004-12-14 |
| 6770396 | Polymer electrolyte fuel cell | Kazuhito Hatoh, Hiroki Kusakabe, Susumu Kobayashi, Tatsuto Yamazaki, Nobuhiro Hase +1 more | 2004-08-03 |
| 6746793 | Polymer electrolyte fuel cell | Hisaaki Gyoten, Eiichi Yasumoto, Kazuhito Hatoh, Makoto Uchida, Yasushi Sugawara +6 more | 2004-06-08 |
| 6740443 | Polymer electrolyte fuel cell | Tatsuto Yamazaki, Yoshiaki Yamamoto, Hiroki Kusakabe, Nobuhiro Hase, Shinsuke Takeguchi | 2004-05-25 |
| 6689504 | Fuel cell stack with separator of a laminate structure | Toshihiro Matsumoto, Kazuhito Hatoh, Hisaaki Gyoten, Kazufumi Nishida, Teruhisa Kanbara | 2004-02-10 |