| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 3 | |
| #2 | Netherlands | 3 | |
| #3 | United Kingdom | 2 | |
| #4 | Japan | 2 | |
| #5 | United States | 2 | |
| #6 | Belgium | 1 | |
| #7 | Canada | 1 | |
| #8 | Switzerland | 1 | |
| #9 | Germany | 1 | |
| #10 | Ireland | 1 | |
| #11 | Italy | 1 | |
| #12 | Luxembourg | 1 | |
| #13 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Environmental technology | |
| #3 | Macromolecular chemistry and polymers | |
| #4 | Machines | |
| #5 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kuiper D | 2 |
| #2 | Mendia M | 2 |
| #3 | Tidball R | 2 |
| #4 | Mayfield Lawrence C | 2 |
| #5 | Duyn A | 2 |
| #6 | Mayfield L | 2 |
| #7 | Wijck F | 2 |
| #8 | Tidball Robert A | 2 |
| #9 | Vet W | 2 |
| #10 | Mendia Massimo | 2 |
| Publication | Filing date | Title |
|---|---|---|
| IE802375L | Spiral wrap reverse osmosis membrane element | |
| DE3033800A1 | REVERSE OSMOSIS BODY MADE FROM MEMBRANE LAYERED BODY | |
| US4382865A | Treatment of reducible halohydrocarbon containing aqueous stream | |
| US4083780A | Fluid purification system | |
| ZA7602209B | Gas separation membrane |