Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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, Motoyuki Tsuihiji | 2006-03-21 |
| 6890242 | Method of fabricating a semiconductor device | Motoyuki Tsuihiji | 2005-05-10 |
| 6830679 | Filtration device | Motoyuki Tsuihiji, Hiroyuki Umezawa, Masahiro Iseki | 2004-12-14 |
| 6746309 | Method of fabricating a semiconductor device | Motoyuki Tsuihiji | 2004-06-08 |
| 6461524 | Method of filtering a fluid | Motoyuki Tsuihiji | 2002-10-08 |
| 6428709 | Method of filtering a fluid | Motoyuki Tsuihiji | 2002-08-06 |
| 6406622 | Apparatus for filtering a fluid | Motoyuki Tsuihiji | 2002-06-18 |
| 6299513 | Method of fabricating a semiconductor device | Motoyuki Tsuihiji | 2001-10-09 |
| 4909319 | Heat exchanger | Atuyumi Ishikawa, Takeshi Kanai | 1990-03-20 |