Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6953015 | Engine | Masaru Asari, Ikuro Hara, Kazuaki Shimoyama | 2005-10-11 |
| 4969369 | Multi-stage gear shift transmission | Kiyokazu Okubo, Shizuo Ishikura, Kazumasa Shibuya, Makoto Sumi | 1990-11-13 |