Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9531023 | Exhaust state control device for fuel cell for mobile unit | Hiromi Tanaka, Keigo Suematsu | 2016-12-27 |
| 8746274 | Hydrogen supply apparatus and fuel gas supply apparatus | Tatsuaki Yokoyama, Syuuji Hirakata, Osamu Yumita, Hiroshi Fujitani, Keigo Suematsu +6 more | 2014-06-10 |
| 8277999 | Fuel cell system and method to prevent freezing after shut-down | Nobuyuki Kitamura | 2012-10-02 |
| 8252473 | Fuel cell-equipped vehicle and control method for fuel cell-equipped vehicle | — | 2012-08-28 |
| 8232019 | Fuel cell system | Keigo Suematsu, Tatsuaki Yokoyama, Shuji Hirakata, Atsushi Matsuba, Katsuhiko Oshikawa | 2012-07-31 |
| 7851097 | Fuel cell system | Keigo Suematsu, Tatsuaki Yokoyama, Shuji Hirakata, Atsushi Matsuba, Katsuhiko Oshikawa | 2010-12-14 |
| 7794888 | Fuel cell system | Tatsuaki Yokoyama, Osamu Yumita, Masaaki Matsusue, Keigo Suematsu, Shuji Hirakata +1 more | 2010-09-14 |
| 6343499 | Air-fuel ratio detecting apparatus and method | Shinsuke Inagaki, Keiichiro Aoki | 2002-02-05 |
| 6082338 | Evaporation fuel treating device for an internal combustion engine | Akinori Osanai | 2000-07-04 |
| 6059057 | Catalyst temperature control apparatus for hybrid vehicle | Suehiro Yamazaki, Kaoru Ohtsuka | 2000-05-09 |
| 6032753 | Catalyst temperature control apparatus for hybrid vehicle | Suehiro Yamazaki, Kaoru Ohtsuka | 2000-03-07 |
| 5899828 | Engine pumping loss control apparatus for locking intake or exhaust valves full open during regenerative braking hybrid vehicle | Suehiro Yamazaki, Kaoru Ohtsuka | 1999-05-04 |
| 5664548 | Apparatus for detecting trouble in exhaust-gas recirculation system | Hidemi Onaka, Koji Morita | 1997-09-09 |
| 5577484 | Method and apparatus for detecting trouble in exhaust-gas recirculation system | Hidemi Onaka | 1996-11-26 |
| 5088281 | Method and apparatus for determining deterioration of three-way catalysts in double air-fuel ratio sensor system | Nobuaki Kayanuma, Michio Furuhashi, Yukihiro Sonoda, Hiroyuki Sawamoto, Kouichi Hoshi +2 more | 1992-02-18 |
| 4732128 | Method and apparatus for controlling heater for heatng air-fuel ratio sensor | Mamoru Yoshioka, Kenichi Nomura, Kouichi Hoshi | 1988-03-22 |