Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7257852 | Suction unit for use in an electric vacuum cleaner and electric vacuum cleaner employing same | Masaki Shibuya, Koichi Fujita | 2007-08-21 |
| 7174593 | Vacuum cleaner having an ion generator | Yasushi Kondo, Yoshihiro Taniguchi, Ryohei Yoshida, Masaki Shibuya, Seiji Yamaguchi +5 more | 2007-02-13 |
| 7131164 | Vacuum cleaner and suction nozzle employed therein | Hiroyuki Uratani, Koichi Fujita, Masaki Shibuya, Hidetoshi Imai, Masaki Takahashi +2 more | 2006-11-07 |