Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11181054 | Intake-air temperature controlling device for engine | Shinichi Hikitani, Hajime Umehara, Kenji Sugasaki, Shin Kodama, Hiromasa Nakagawa +5 more | 2021-11-23 |
| 11111865 | Compression ignition engine with supercharger | Shinichi Hikitani, Hajime Umehara, Tomokuni Kusunoki, Tatsuya Takahata, Shinji Watanabe +4 more | 2021-09-07 |