| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 13 | |
| #2 | Austria | 1 | |
| #3 | Switzerland | 1 | |
| #4 | Denmark | 1 | |
| #5 | Luxembourg | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Electrical machinery and energy | |
| #3 | Environmental technology | |
| #4 | Basic materials chemistry |
| # | Technology | |
|---|---|---|
| #1 | Ignition and extinguishing | |
| #2 | Batteries | |
| #3 | Reduction of greenhouse gas emissions | |
| #4 | Detonating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Coenders August | 16 |
| #2 | August Coenders | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1934143A1 | Secondary cell with aluminium anode | |
| DE1796073A1 | Electrode for secondary elements |