Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8746202 | Lubrication system of an internal combustion engine | — | 2014-06-10 |
| 8261755 | Fuel injection system of compression ignition internal combustion engine | Takashi Koyama, Hisashi Ohki, Masahiro Nagae, Kiyoshi Fujiwara, Tomohiro Kaneko +2 more | 2012-09-11 |
| 7861686 | Fuel injection control apparatus and fuel injection control method | Hisashi Ohki, Takashi Koyama | 2011-01-04 |