Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7794888 | Fuel cell system | Tatsuaki Yokoyama, Osamu Yumita, Masaaki Matsusue, Takahide Izutani, Shuji Hirakata +1 more | 2010-09-14 |
| 7648787 | Gas leak detection device and fuel cell system | Tatsuaki Yokoyama, Kenji Umayahara, Nobuhiro Tomosada | 2010-01-19 |