| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Finland | 21 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Materials and metallurgy | |
| #3 | Chemical engineering | |
| #4 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Inorganic treatment materials | |
| #2 | Separation | |
| #3 | Inorganic compounds | |
| #4 | Water treatment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Leroy Derr Elwood | 2 |
| #2 | Hosea Deal Jr Carl | 2 |
| #3 | Nicholas Papadopoulos Michael | 2 |
| #4 | Edward Liedholm George | 1 |
| #5 | George Bayle Gerhard | 1 |
| #6 | Martinus Kolijn | 1 |
| #7 | Spijker Peter Van T | 1 |
| #8 | Robert Kreps | 1 |
| #9 | Casper Vegter Geert | 1 |
| #10 | Laurie Furmidge Cedric George | 1 |