Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11118532 | Spark-ignited internal combustion engine | — | 2021-09-14 |
| 10920712 | Internal combustion engine | Susumu Hashimoto, Shinji Sadakane, Hiroshi Tada, Fumio Takamiya, Akira Hojo | 2021-02-16 |