| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 2 | |
| #2 | Brazil | 2 | |
| #3 | China | 2 | |
| #4 | Czechia | 2 | |
| #5 | EPO (European Patent Office) | 2 | |
| #6 | Finland | 2 | |
| #7 | United States | 2 | |
| #8 | WIPO (World Intellectual Property Organization) | 2 | |
| #9 | Norway | 1 | |
| #10 | Poland | 1 | |
| #11 | Russian Federation | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Metal production and refining | |
| #2 | Climate change mitigation in goods production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Peters Ernest | 9 |
| #2 | O'Brien Robert N | 8 |
| #3 | O'Brien N Robert | 6 |
| #4 | O Brien Robert N | 2 |
| #5 | N Robert O'Brajen | 1 |
| #6 | Peters Ernst | 1 |
| #7 | O'Brien R N | 1 |
| #8 | Ehrnest Peters | 1 |
| #9 | Obrien Robert N | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CZ45297A3 | Hydrometallurgical conversion of zinc sulfide to zinc sulfate in ores and concentrates containing zinc sulfide | |
| AU5877294A | Hydrometallurgical recovery of metals from complex ores |