Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830840 | Operation method for polymer electrolytic fuel cell | Kazuhito Hatoh, Osamu Sakai, Hideo Ohara, Junji Niikura, Hisaaki Gyoten +1 more | 2004-12-14 |
| 6689504 | Fuel cell stack with separator of a laminate structure | Kazuhito Hatoh, Hisaaki Gyoten, Hideo Ohara, Kazufumi Nishida, Teruhisa Kanbara | 2004-02-10 |