| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | China | 9 | |
| #3 | WIPO (World Intellectual Property Organization) | 9 | |
| #4 | EPO (European Patent Office) | 7 | |
| #5 | Republic of Korea | 7 | |
| #6 | Taiwan | 7 | |
| #7 | Australia | 4 | |
| #8 | Canada | 4 | |
| #9 | Singapore | 3 | |
| #10 | Hong Kong | 2 | |
| #11 | Brazil | 1 | |
| #12 | Germany | 1 | |
| #13 | France | 1 | |
| #14 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Separating solids using liquids | |
| #3 | Chemical or physical processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Saito Yasuhiro | 58 |
| #2 | Yasuhiro Saito | 6 |
| #3 | Saitoh Yasuhiro | 2 |
| Publication | Filing date | Title |
|---|---|---|
| AU2013201188A1 | Method for cleaning particulate filtration material in a system and system | |
| US2007113870A1 | Method of cleansing filtration media and system therefor | |
| GB0125361D0 | Filtration apparatus | |
| WO0183076A1 | Filtration device, and method of cleaning filter material contained in filtration device | |
| WO0236239A1 | Filter sand washing method and its system | |
| US6273106B1 | Particulate matter washing apparatus and method | |
| SG54572A1 | Sand washing apparatus |