Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8627531 | Vacuum cleaner and device having ion generator | Mikio Yagi, Shigenori Hato, Kazumasa Hayashi, Hiroshi Yoshimura, Yoshihiro Shimizu +4 more | 2014-01-14 |
| 7591043 | Vacuum cleaner and device having ion generator | Mikio Yagi, Shigenori Hato, Kazumasa Hayashi, Hiroshi Yoshimura, Yoshihiro Shimizu +4 more | 2009-09-22 |