Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9028570 | Odorant addition device and fuel gas supply system | Keigo Suematsu, Makoto Ueno, Tatsuaki Yokoyama, Hiroshi Fujitani, Shuji Hirakata | 2015-05-12 |
| 8871392 | Fuel cell system | Nobuo Watanabe, Keigo Suematsu, Tatsuaki Yokoyama, Katsuhiko Hirose | 2014-10-28 |
| 8746274 | Hydrogen supply apparatus and fuel gas supply apparatus | Takahide Izutani, Tatsuaki Yokoyama, Syuuji Hirakata, Osamu Yumita, Hiroshi Fujitani +6 more | 2014-06-10 |
| 8232019 | Fuel cell system | Keigo Suematsu, Tatsuaki Yokoyama, Shuji Hirakata, Takahide Izutani, Katsuhiko Oshikawa | 2012-07-31 |
| 7851097 | Fuel cell system | Keigo Suematsu, Tatsuaki Yokoyama, Shuji Hirakata, Takahide Izutani, Katsuhiko Oshikawa | 2010-12-14 |