Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9365884 | Environmental evaluation installation and environmental evaluation method | Kazuo Nishikawa, Norihiro Matsuoka, Tetsuya Yoneda, Masashi Kawai | 2016-06-14 |
| 8828714 | Method of evaluating elimination of microoganisms and apparatus for evaluating elimination of microorganisms | Kazuo Nishikawa, Yoshihiro Shimizu, Tetsuyuki Ohtani, Hideo Nojima, Masato Aoki | 2014-09-09 |
| 8685328 | Method for purifying inside of room | Hiroaki Okano, Kazuo Nishikawa, Norihiro Matsuoka, Tomonori Akai, Misaki Nakamura +1 more | 2014-04-01 |
| 8627531 | Vacuum cleaner and device having ion generator | Kohji Ninomiya, Mikio Yagi, Shigenori Hato, Kazumasa Hayashi, Hiroshi Yoshimura +4 more | 2014-01-14 |
| 8607472 | Hand dryer | Hikoya Ishii | 2013-12-17 |
| 7591043 | Vacuum cleaner and device having ion generator | Kohji Ninomiya, Mikio Yagi, Shigenori Hato, Kazumasa Hayashi, Hiroshi Yoshimura +4 more | 2009-09-22 |