| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 13 | |
| #2 | Canada | 4 | |
| #3 | United States | 4 | |
| #4 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Surface technology and coating | |
| #3 | Environmental technology | |
| #4 | Machines | |
| #5 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ewald A Zdansky | 13 |
| #2 | Zdansky Ewald A | 9 |
| #3 | Geffcken Heinrich Dr | 1 |
| #4 | Geffcken Heinrich H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2960843A | Crystallizing apparatus | |
| CA580175A | Electrolyser of the filter-press type | |
| CA534481A | Crystallizer | |
| CA578896A | Apparatus for the electrolytic decomposition of water | |
| CA581416A | Process for the electrolytic production of hydrogen and oxygen |