Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8006344 | Suction nozzle-hanging apparatus for use in vacuum cleaner | Dong-houn Yang, Hyun Ju Lee | 2011-08-30 |
| 7716784 | Suction port assembly and vacuum cleaner having the same | Dong-houn Yang, Hwa-gyu Song, Sung-cheol Lee, Hyun Ju Lee | 2010-05-18 |
| 7174593 | Vacuum cleaner having an ion generator | Masakuni Soejima, Yasushi Kondo, Yoshihiro Taniguchi, Ryohei Yoshida, Masaki Shibuya +5 more | 2007-02-13 |
| 7131164 | Vacuum cleaner and suction nozzle employed therein | Masakuni Soejima, Koichi Fujita, Masaki Shibuya, Hidetoshi Imai, Masaki Takahashi +2 more | 2006-11-07 |
| 6536073 | Electric vacuum cleaner | Yoshiaki Ohnishi, Toshifumi Miyahara, Masaki Shibuya, Kazuma Suo, Saburo Kajikawa | 2003-03-25 |