Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8763569 | Vertical, multi-link, adjustable-stroke type engine | Kota Tokubi, Kotaro Sugi | 2014-07-01 |
| 8171899 | Link type variable stroke engine | Sei Watanabe, Shohei Kono | 2012-05-08 |
| 7896127 | Muffler unit for general-purpose engine | Yoshikazu Sato, Kazuhiro Sakamoto, Souhei Honda | 2011-03-01 |
| 7661395 | Stroke-variable engine | Sei Watanabe, Shohei Kono | 2010-02-16 |