Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7655060 | Dust collection unit for electric vacuum cleaner and upright electric vacuum cleaner | Koichi Nakai, Atsuo Hamada, Kazuyoshi Yoshimi, Akihiro Yoneyama | 2010-02-02 |
| 7350263 | Electric vacuum cleaner | Kazuyoshi Yoshimi, Shuzo Ueyama, Hiroyuki Takami, Kouichi Nakai | 2008-04-01 |
| 7175682 | Electric vacuum cleaner equipped with a dust collection unit | Koichi Nakai, Atsuo Hamada, Kazuyoshi Yoshimi, Akihiro Yoneyama | 2007-02-13 |
| 7014675 | Electric vacuum cleaner equipped with a dust collection unit | Koichi Nakai, Atsuo Hamada, Kazuyoshi Yoshimi, Akihiro Yoneyama | 2006-03-21 |
| 6539577 | Vacuum cleaner suction tool with partition defining air current dust pickup path | Atsushi Okuda, Atuo Hamada, Souji Sakata, Kazuyoshi Yoshimi, Nobuaki Takahashi +2 more | 2003-04-01 |
| 6192550 | Dust-collecting device for vacuum cleaner and upright type vacuum cleaner | Atsuo Hamada, Kazuyoshi Yoshimi, Atsushi Okuda, Souji Sakata, Naoki Suetsugu +2 more | 2001-02-27 |
| 5907889 | Vacuum cleaner | Sadao Fukushima, Shuzo Ueyama, Shuichi HIGUCHI | 1999-06-01 |
| 5768746 | Electric vacuum cleaner | Sadao Fukushima, Kazuyoshi Yoshimi, Shuzo Ueyama, Tomonari Kawaguchi, Isao Yoneda +1 more | 1998-06-23 |