Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8011332 | Spark ignition type internal combustion engine | Daisaku Sawada, Daisuke Akihisa, Eiichi Kamiyama | 2011-09-06 |
| 7997241 | Spark ignition type internal combustion engine | Eiichi Kamiyama, Daisuke Akihisa | 2011-08-16 |
| 7882821 | Spark ignition type internal combustion engine | Daisuke Akihisa, Daisaku Sawada, Eiichi Kamiyama | 2011-02-08 |