Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D668609 | Spark plug cap for an internal combustion engine | Masaaki Sugiyama, Ryo Ono, Takashi Nakamura | 2012-10-09 |
| D649099 | Fuel tank cap | Takashi Nakamura | 2011-11-22 |
| D644664 | Internal combustion engine | Masaaki Sugiyama, Ryo Ono, Takashi Nakamura | 2011-09-06 |
| D643854 | Cover for an internal combustion engine | Masaaki Sugiyama, Ryo Ono, Takashi Nakamura | 2011-08-23 |
| D577557 | Main body of a portable chain saw | Kouichi Shimokawa, Kiminobu Satou | 2008-09-30 |
| D576005 | Main body of a portable chain saw | Kouichi Shimokawa, Kiminobu Satou | 2008-09-02 |
| D573860 | Main body of a portable chain saw | Kouichi Shimokawa, Kiminobu Satou | 2008-07-29 |
| D549537 | Chain saw | Atsushi Harada, Yuu Sugishita | 2007-08-28 |
| D525990 | Internal combustion engine for a mowing machine | Ryou Ono | 2006-08-01 |
| D521447 | Battery for a mowing machine | Ryou Ono | 2006-05-23 |
| D521026 | Switch box for mowing machine | Ryou Ono | 2006-05-16 |
| D519336 | Mowing machine | Ryou Ono | 2006-04-25 |
| D416265 | Engine | Hiroshi Kato, Takeshi Watanabe | 1999-11-09 |
| D303671 | Combined portable internal combustion engine and tool | Katsumi Kiyooka, Tetsuo Ueno, Hideko Inomata | 1989-09-26 |
| D302931 | Chain saw | Kazuo Nakajima | 1989-08-22 |
| 4494490 | Cylinder cover | Katsumi Kiyooka, Atsushi Harada | 1985-01-22 |