| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | EPO (European Patent Office) | 6 |
| # | Industry | |
|---|---|---|
| #1 | Computer technology | |
| #2 | Chemical engineering | |
| #3 | Machine tools | |
| #4 | Machines | |
| #5 | Control | |
| #6 | Environmental technology | |
| #7 | Textiles and paper | |
| #8 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sato Kazuo | 7 |
| #2 | Arai Koichi | 6 |
| #3 | Kato Mitsuyoshi | 3 |
| #4 | Aria Koichi | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2007038464A1 | 2-dimensional code formation method and formation device | |
| US5186834A | Scraper filter system | |
| US5061366A | Scraper filter system | |
| US5059320A | Locking structure of wire rod for filter element | |
| US4843700A | Locking structure of wire rod for filter element | |
| US4732333A | Multi-purpose separation apparatus |