Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6725974 | Balancer shaft apparatus for an engine | Masaaki Sato, Sakumi Haseto | 2004-04-27 |
| 6382165 | Engine balancer apparatus | Kazuo Isayama, Shinji Fujihira, Masaaki Sato | 2002-05-07 |