Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9243586 | Ventilation outlet structure of cogeneration system | Akiko Ichikawa, Kotaro Sugi | 2016-01-26 |
| 8679212 | Air cleaner device | Hideyuki Ushiyama | 2014-03-25 |
| 8446023 | Cogeneration apparatus case venting system | Yoshiharu Takita | 2013-05-21 |
| 8418753 | Heat exchange tube | Isao Hirokawa, Tetsuaki Nakayama, Yasuyuki Watanabe, Toshihiro Kondo, Hideyuki Ushiyama | 2013-04-16 |
| 7997239 | Breather device of vertical type engine | Kazuhiro Ishizaka | 2011-08-16 |
| 7918196 | Vertical type engine | Kazuhiro Ishizaka | 2011-04-05 |