Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11530638 | General-purpose engine | Yuji Oigawa, Kiichi Shimamura | 2022-12-20 |
| 11300035 | General-purpose engine | Yuji Oigawa, Kiichi Shimamura | 2022-04-12 |
| 11280248 | General-purpose engine | Yuji Oigawa, Kiichi Shimamura, Masanori Ishikawa, Shohma Higano | 2022-03-22 |