Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7655060 | Dust collection unit for electric vacuum cleaner and upright electric vacuum cleaner | Koichi Nakai, Atsuo Hamada, Kazumasa Kamatani, Akihiro Yoneyama | 2010-02-02 |
| 7350263 | Electric vacuum cleaner | Kazumasa Kamatani, Shuzo Ueyama, Hiroyuki Takami, Kouichi Nakai | 2008-04-01 |
| 7175682 | Electric vacuum cleaner equipped with a dust collection unit | Koichi Nakai, Atsuo Hamada, Kazumasa Kamatani, Akihiro Yoneyama | 2007-02-13 |
| 7014675 | Electric vacuum cleaner equipped with a dust collection unit | Koichi Nakai, Atsuo Hamada, Kazumasa Kamatani, Akihiro Yoneyama | 2006-03-21 |
| 6735818 | Upright type electric vacuum cleaner | Atsuo Hamada, Atsushi Okuda, Naoki Suetsugu | 2004-05-18 |
| 6539577 | Vacuum cleaner suction tool with partition defining air current dust pickup path | Atsushi Okuda, Atuo Hamada, Souji Sakata, Kazumasa Kamatani, Nobuaki Takahashi +2 more | 2003-04-01 |
| 6192550 | Dust-collecting device for vacuum cleaner and upright type vacuum cleaner | Atsuo Hamada, Kazumasa Kamatani, Atsushi Okuda, Souji Sakata, Naoki Suetsugu +2 more | 2001-02-27 |
| 6058559 | Electric vacuum cleaner | Isao Yoneda, Naoki Suetsugu | 2000-05-09 |
| 5768746 | Electric vacuum cleaner | Kazumasa Kamatani, Sadao Fukushima, Shuzo Ueyama, Tomonari Kawaguchi, Isao Yoneda +1 more | 1998-06-23 |
| 4521153 | Blower and rotating wind deflector | Masao Morimoto, Shoji Sano, Kazuo Saitou | 1985-06-04 |