Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8828714 | Method of evaluating elimination of microoganisms and apparatus for evaluating elimination of microorganisms | Kazuo Nishikawa, Hisaharu Yagi, Yoshihiro Shimizu, Hideo Nojima, Masato Aoki | 2014-09-09 |
| 8627531 | Vacuum cleaner and device having ion generator | Kohji Ninomiya, Mikio Yagi, Shigenori Hato, Kazumasa Hayashi, Hiroshi Yoshimura +4 more | 2014-01-14 |
| 7591043 | Vacuum cleaner and device having ion generator | Kohji Ninomiya, Mikio Yagi, Shigenori Hato, Kazumasa Hayashi, Hiroshi Yoshimura +4 more | 2009-09-22 |
| 6859184 | Polarized wave separating structure, radio wave receiving converter and antenna apparatus | Atsushi Nagano | 2005-02-22 |