| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 2 | |
| #2 | Austria | 1 | |
| #3 | Canada | 1 | |
| #4 | Germany | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Spain | 1 | |
| #7 | Finland | 1 | |
| #8 | Hungary | 1 | |
| #9 | Ireland | 1 | |
| #10 | Italy | 1 | |
| #11 | Japan | 1 | |
| #12 | Portugal | 1 | |
| #13 | Yugoslavia (Serbia and Montenegro) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Environmental technology | |
| #3 | Digital networks |
| # | Technology | |
|---|---|---|
| #1 | Water treatment | |
| #2 | Chemical or physical processes | |
| #3 | Digital information transmission |
| # | Name | Total Patents |
|---|---|---|
| #1 | Keil Wolfgang | 8 |
| #2 | Buorufugangu Kairu | 1 |
| #3 | Wolfgang Keil | 1 |
| Publication | Filing date | Title |
|---|---|---|
| IE782292L | De-salination of water | |
| DE2752581B1 | Device for the complete desalination of water |