Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10968816 | Spark-ignition internal combustion engine | Hiroaki Muranaka, Naohiro Yamaguchi, Yoshitaka Wada | 2021-04-06 |
| 10968817 | Spark-ignition internal combustion engine | Hiroaki Muranaka, Naohiro Yamaguchi, Yoshitaka Wada | 2021-04-06 |
| 10907533 | Spark-ignition internal combustion engine | Hiroaki Muranaka, Naohiro Yamaguchi, Yoshitaka Wada | 2021-02-02 |
| 9791045 | Oil ring | Masaki Fukuma, Hiroaki Muranaka, Shuji Takuma | 2017-10-17 |