| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 15 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Civil engineering | |
| #3 | Environmental technology | |
| #4 | Electrical machinery and energy | |
| #5 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Locomotives | |
| #2 | Mining | |
| #3 | Electrical vehicle propulsion | |
| #4 | Rail vehicle suspensions | |
| #5 | Batteries | |
| #6 | Climate change mitigation in transportation | |
| #7 | Machines | |
| #8 | Reduction of greenhouse gas emissions |
| Publication | Filing date | Title |
|---|---|---|
| DE461091C | Battery box for accumulators | |
| DE475677C | Accumulator locomotive |