Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6746793 | Polymer electrolyte fuel cell | Hisaaki Gyoten, Eiichi Yasumoto, Kazuhito Hatoh, Makoto Uchida, Yasushi Sugawara +6 more | 2004-06-08 |
| 6689504 | Fuel cell stack with separator of a laminate structure | Toshihiro Matsumoto, Kazuhito Hatoh, Hisaaki Gyoten, Hideo Ohara, Teruhisa Kanbara | 2004-02-10 |