| # | Country | Total Patents | |
|---|---|---|---|
| #1 | African Regional Industrial Property Organization | 2 | |
| #2 | Canada | 2 | |
| #3 | EPO (European Patent Office) | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | Iceland | 2 | |
| #6 | Republic of Korea | 2 | |
| #7 | Norway | 2 | |
| #8 | New Zealand | 2 | |
| #9 | Taiwan | 2 | |
| #10 | United States | 2 | |
| #11 | Argentina | 1 | |
| #12 | Australia | 1 | |
| #13 | China | 1 | |
| #14 | EAPO (Eurasian Patent Organization) | 1 | |
| #15 | Mexico | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Climate change adaptation technologies | |
| #2 | Water treatment | |
| #3 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Graham William | 21 |
| #2 | William Graham | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NZ561081A | Manufacture of membranes for desalination and filtration | |
| CN101151089A | Manufacture of membranes for desalination and filtration | |
| GB0316556D0 | Treatment of water | |
| GB0217070D0 | Filter for removing solids from liquids |