| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Argentina | 1 | |
| #2 | Australia | 1 | |
| #3 | Belgium | 1 | |
| #4 | Brazil | 1 | |
| #5 | Canada | 1 | |
| #6 | Switzerland | 1 | |
| #7 | Germany | 1 | |
| #8 | Denmark | 1 | |
| #9 | Spain | 1 | |
| #10 | United Kingdom | 1 | |
| #11 | Netherlands | 1 | |
| #12 | Norway | 1 | |
| #13 | Portugal | 1 | |
| #14 | Sweden | 1 | |
| #15 | United States | 1 | |
| #16 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Electrical machinery and energy | |
| #3 | Materials and metallurgy |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ducati Umberto | 11 |
| #2 | Ducati Umbert | 1 |
| #3 | Ducati U | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4460442A | Hydrometallurgical method for recovering metal materials from spent lead-acid storage batteries |