| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 1 | |
| #2 | Belgium | 1 | |
| #3 | Canada | 1 | |
| #4 | Germany | 1 | |
| #5 | Spain | 1 | |
| #6 | Finland | 1 | |
| #7 | France | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Italy | 1 | |
| #10 | Japan | 1 | |
| #11 | Netherlands | 1 | |
| #12 | Norway | 1 | |
| #13 | Sweden | 1 | |
| #14 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Metal production and refining |
| # | Name | Total Patents |
|---|---|---|
| #1 | Peterson Henry John | 4 |
| #2 | Peterson Henry J | 3 |
| #3 | Peterson H J | 1 |
| #4 | Henrii Zei Piitasan | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4150091A | Manganese ore leaching process |