| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Electrical machinery and energy | |
| #3 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Metal production and refining | |
| #2 | Batteries | |
| #3 | Reduction of greenhouse gas emissions | |
| #4 | Compounds containing metals | |
| #5 | Iron and steel production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kangro Dr Walther | 3 |
| Publication | Filing date | Title |
|---|---|---|
| DE1006479B | Process for storing electrical energy in liquids | |
| DE914264C | Method for storing electrical energy | |
| DE576279C | Process for the production of metal chlorine compounds from gases obtained by chlorinating roesting | |
| DE564125C | Digestion of ores containing beryllium |