| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 8 | |
| #2 | Republic of Korea | 3 | |
| #3 | China | 1 | |
| #4 | Taiwan | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Umezawa Hiroyuki | 9 |
| #2 | Taihichi Motoyuki | 8 |
| #3 | Izeki Masahiro | 6 |
| #4 | Iinuma Hirofumi | 6 |
| #5 | Tsuihiji Motoyuki | 4 |
| #6 | Iseki Masahiro | 3 |
| #7 | Masahiro Iseki | 1 |
| #8 | Hara Koichi | 1 |
| #9 | Kasahara Tatsumi | 1 |
| #10 | Hiroyuki Umezawa | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2007000870A | Filtration equipment | |
| JP2005334829A | Filter system | |
| CN1602991A | Filtration apparatus | |
| JP2004321998A | Filter apparatus | |
| JP2004321996A | Filter apparatus | |
| JP2004321997A | Filter apparatus | |
| JP2004321995A | Filter apparatus | |
| JP2003164874A | Apparatus for removing object to be removed of fluid, apparatus for making pure water and method of making pure water | |
| JP2003135940A | Filtration equipment |