Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8453629 | Spark-ignition engine | Keiichi Nakano, Wataru Okada, Emi Tabata | 2013-06-04 |
| 4951871 | Sound-proof type engine working machine with waste heat recovery apparatus | Tsugunori Hata, Akira Inoue, Kazuhiko Ogura, Isamu Kubomoto | 1990-08-28 |