Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8607545 | Air-fuel ratio control device | Yasuji Ishizuka, Masaki Koga | 2013-12-17 |
| 8606446 | Control system of hybrid vehicle | Takao Ito, Masaki Koga, Tetsuya Iwasaki, Takashi Ogino, Yasuhiro Konishi +1 more | 2013-12-10 |
| 8176728 | Air-fuel ratio control device | Yasuji Ishizuka, Masaki Koga | 2012-05-15 |
| 8141343 | Air-fuel ratio control apparatus | Hiroyuki Nagai, Yasuji Ishizuka, Masaki Koga | 2012-03-27 |
| 7536999 | Air-fuel ratio control apparatus | Yasuji Ishizuka, Masaki Koga, Kenichi Sato | 2009-05-26 |