Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7493765 | Hydrogen production method and apparatus and engine employing hydrogen production apparatus | Tomohiro Akiyama, Masaki Hayasaka, Hiroshi Uesugi | 2009-02-24 |
| 7452463 | Apparatus for treating water | Hiroyuki Umezawa, Masahiro Iseki, Daizo Takaoka, Takashi Igarashi, Hiromichi Ohtake | 2008-11-18 |
| 7438804 | Coagulation treatment apparatus | Hiroyuki Umezawa, Masahiro Iseki, Daizo Takaoka, Koichi Hara | 2008-10-21 |
| 7396458 | Wastewater treatment equipment | Hiroyuki Umezawa, Masahiro Iseki | 2008-07-08 |
| 7381323 | Filtration apparatus | Hiroyuki Umezawa, Masahiro Iseki | 2008-06-03 |
| 7157012 | Water treatment device and water treatment method using the same | Hiroyuki Umezawa, Masahiro Iseki, Daizo Takaoka, Tsuyoshi Rakuma, Mineo Ikematsu +1 more | 2007-01-02 |
| 7014770 | Filtering method of a colloidal solution | Hiroyuki Umezawa, Masahiro Iseki, Hirofumi Iinuma | 2006-03-21 |
| 6890242 | Method of fabricating a semiconductor device | Hirofumi Iinuma | 2005-05-10 |
| 6830679 | Filtration device | Hirofumi Iinuma, Hiroyuki Umezawa, Masahiro Iseki | 2004-12-14 |
| 6746309 | Method of fabricating a semiconductor device | Hirofumi Iinuma | 2004-06-08 |
| 6461524 | Method of filtering a fluid | Hirofumi Iinuma | 2002-10-08 |
| 6428709 | Method of filtering a fluid | Hirofumi Iinuma | 2002-08-06 |
| 6406622 | Apparatus for filtering a fluid | Hirofumi Iinuma | 2002-06-18 |
| 6299513 | Method of fabricating a semiconductor device | Hirofumi Iinuma | 2001-10-09 |