| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Canada | 3 | |
| #3 | Mexico | 2 | |
| #4 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Materials and metallurgy | |
| #3 | Surface technology and coating | |
| #4 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Metal production and refining | |
| #2 | Climate change mitigation in goods production | |
| #3 | Water treatment | |
| #4 | Electrolytic metal production | |
| #5 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Woog Manfred J | 11 |
| #2 | Schmidt Charles W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4988448A | Method for removing substances from a solution | |
| US4802961A | Silver removal apparatus and method | |
| DE3509999A1 | Reusable cartridge for recovering noble metals | |
| US4497658A | Compact precious metal furnace and recovery method | |
| US4662613A | Reusable precious metal recovery cartridge | |
| US4325732A | Precious metal recovery cartridge and method |