Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10895188 | Exhaust gas purifier | Ryota KOBAYASHI, Shunji Hamaoka, Tsuyoshi Inoue, Tetsuya Yokoyama, Yoshinori Fukui +2 more | 2021-01-19 |
| 6553960 | Combustion system for direct injection diesel engines | Sigeru Yoshikawa, Shunji Hamaoka | 2003-04-29 |