Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6808468 | Composite power transmission mechanism and vehicle | Taizo Miyazaki, Ryoso Masaki, Masahiko Amano, Yasuo Morooka | 2004-10-26 |
| 6557656 | Driving system and vehicle | Ryoso Masaki, Masahiko Amano, Taizo Miyazaki, Yasuo Morooka | 2003-05-06 |