Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10916787 | Fuel cell system | Takashi Koyama, Ryo Yoshioka, Takahiro Yamafuji | 2021-02-09 |
| 10741857 | Fuel cell system | Takashi Koyama, Ryo Yoshioka, Takahiro Yamafuji | 2020-08-11 |
| 9987904 | Fuel cell vehicle air-conditioning apparatus and control method thereof | Takashi Koyama, Keigo Suematsu | 2018-06-05 |
| 9908381 | Vehicle control apparatus and vehicle control method | Keigo Suematsu, Yoshiaki Naganuma, Masanori Uehara, Takashi Koyama | 2018-03-06 |
| 9444112 | Fuel cell monitoring device | Yuji Ishikawa, Ikuyasu Kato, Takashi Yamada, Keigo Suematsu | 2016-09-13 |
| 9160014 | Fuel cell system capable of performing gas purge to adjust amount of water therein | Hideshi Izuhara, Tooru Tanaka, Keigo Suematsu | 2015-10-13 |
| 8765316 | Fuel cell system | Yoshiaki Naganuma, Hiromi Tanaka, Osamu Yumita, Nobukazu Mizuno | 2014-07-01 |
| 8652699 | Fuel cell system | Keigo Suematsu, Tomotaka Ishikawa | 2014-02-18 |
| 8637201 | Cooling system | Keigo Suematsu, Masanori Uehara, Takashi Koyama | 2014-01-28 |
| 8492040 | Fuel cell system and method of controlling the same | Kota Manabe, Hiroyuki Imanishi | 2013-07-23 |
| 7462414 | Fuel cell system | Naoto Hotta, Ken Matsunaga | 2008-12-09 |
| 6427924 | Combustion type heater | Masashi Takagi, Masakazu Ozaki, Hirohito Matsui, Sadahisa Onimaru, Toshio Morikawa +1 more | 2002-08-06 |
| 6057688 | Residual capacity detecting apparatus for an electric vehicle's battery and a related residual capacity measuring method | Toshiyuki Kawai, Tomoya Katoh | 2000-05-02 |
| 6044655 | Vapor compression type refrigerating system | Yukikatsu Ozaki, Hisayoshi Sakakibara, Kazuhide Uchida | 2000-04-04 |
| 5890370 | Refrigerating system with pressure control valve | Hisayoshi Sakakibara, Shin Nishida, Sadahisa Onimaru, Yukikatsu Ozaki | 1999-04-06 |