| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 1 | |
| #2 | Canada | 1 | |
| #3 | Switzerland | 1 | |
| #4 | Germany | 1 | |
| #5 | Spain | 1 | |
| #6 | France | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | Italy | 1 | |
| #9 | Netherlands | 1 | |
| #10 | Sweden | 1 | |
| #11 | United States | 1 | |
| #12 | Yugoslavia (Serbia and Montenegro) | 1 | |
| #13 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Surface technology and coating |
| # | Technology | |
|---|---|---|
| #1 | Electrolytic metal production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hunter W | 4 |
| #2 | Hunter William | 4 |
| Publication | Filing date | Title |
|---|---|---|
| US3975244A | Electrolytic refining | |
| GB1479324A | Electrolytic refining of silver |