Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10894733 | Liquid treatment method and apparatus | Hirofumi Fujita, DAISUKE INO, Yasuhiro Hashimoto, Yuko MARUO, Tomoyasu Takaoka | 2021-01-19 |
| 10562796 | Liquid treatment apparatus including first electrode, second electrode, and third electrode, and liquid treatment method using liquid treatment apparatus | Katsumi Imada | 2020-02-18 |
| 9913922 | Sterilizing component removal device, disinfection device, disinfected environment maintaining system, and sterilizing component removal method | Hiroko Murayama, Tatsushi Ohyama, Hironobu Sekine, Koichi Kobayashi, Hiroshi Yamamoto | 2018-03-13 |
| 8702850 | Electric device with air cleaning function | Daisuke Suzuki, Keiko Kurokawa, Mineo Ikematsu, Hiroyuki Umezawa, Yoshiaki Noguchi | 2014-04-22 |
| 8366888 | Water treatment apparatus | Yui Ogawa, Hiroyuki Umezawa, Tetsuya Yamamoto, Tsuyoshi Rakuma, Hiroyuki Kobayashi | 2013-02-05 |
| 8182656 | Electrolyzing device | Kenta Kitsuka, Hironobu Sekine, Tomohito Koizumi, Mineo Ikematsu | 2012-05-22 |
| 7927494 | Water reuse method in cleaning device | Mineo Ikematsu, Kazuhiro Kaneda, Tomohito Koizumi | 2011-04-19 |
| 7452463 | Apparatus for treating water | Hiroyuki Umezawa, Daizo Takaoka, Motoyuki Tsuihiji, Takashi Igarashi, Hiromichi Ohtake | 2008-11-18 |
| 7438804 | Coagulation treatment apparatus | Hiroyuki Umezawa, Daizo Takaoka, Motoyuki Tsuihiji, Koichi Hara | 2008-10-21 |
| 7396458 | Wastewater treatment equipment | Hiroyuki Umezawa, Motoyuki Tsuihiji | 2008-07-08 |
| 7381323 | Filtration apparatus | Hiroyuki Umezawa, Motoyuki Tsuihiji | 2008-06-03 |
| 7335291 | Water treating method, water treating apparatus, and hydroponics system using the apparatus | Yasuhito Kondo, Yasuhiko Shimizu | 2008-02-26 |
| 7300591 | Wastewater treating method and wastewater treating apparatus | Mineo Ikematsu, Daizo Takaoka | 2007-11-27 |
| 7300592 | Water treatment device | Atsushi Yamada, Hiroyuki Umezawa, Tomohito Koizumi, Yui Ogawa | 2007-11-27 |
| 7217346 | Water treating method, water treating apparatus, and hydroponics system using the apparatus | Yasuhito Kondo | 2007-05-15 |
| 7175765 | Method for treating for-treatment water containing organic matter and nitrogen compound | Atsushi Yamada, Mineo Ikematsu, Daizo Takaoka, Yui Ogawa, Yoshihiro Kurokawa | 2007-02-13 |
| 7157012 | Water treatment device and water treatment method using the same | Hiroyuki Umezawa, Daizo Takaoka, Tsuyoshi Rakuma, Mineo Ikematsu, Motoyuki Tsuihiji +1 more | 2007-01-02 |
| 7156962 | Electrolyzing electrode and production method therefor and electrolysis method using electrolyzing electrode and electrolysis solution producing device | Tomohito Koizumi, Naoki Hiro, Tsuyoshi Rakuma, Katsuhiko Mushiake, Hiroyuki Umezawa +2 more | 2007-01-02 |
| 7135099 | Water treating method and water treating system | Yasuhito Kondo | 2006-11-14 |
| 7018543 | Waste water treating method and waste water treating apparatus | Mineo Ikematsu, Naoki Hiro, Tomohito Koizumi, Tsuyoshi Rakuma | 2006-03-28 |
| 7014770 | Filtering method of a colloidal solution | Hiroyuki Umezawa, Motoyuki Tsuihiji, Hirofumi Iinuma | 2006-03-21 |
| 6984326 | Nitrogen treating method and nitrogen treating system | Naoki Hiro, Tomohito Koizumi, Tsuyoshi Rakuma | 2006-01-10 |
| 6830679 | Filtration device | Motoyuki Tsuihiji, Hirofumi Iinuma, Hiroyuki Umezawa | 2004-12-14 |
| 6814853 | Water treating method, water treating apparatus, and hydroponic system using the same | Yasuhito Kondo, Yasuhito Shimizu | 2004-11-09 |
| 6645366 | Waste water treatment device | Kazuo Ikegami | 2003-11-11 |