| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 25 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Environmental technology | |
| #4 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Machines | |
| #2 | Positive-displacement engines | |
| #3 | Internal-combustion piston engines | |
| #4 | Aeroplanes | |
| #5 | Climate change mitigation in transportation | |
| #6 | Rotary pistons | |
| #7 | Pumps | |
| #8 | Pistons and sealings | |
| #9 | Servomotors | |
| #10 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Eickmann Karl | 24 |
| #2 | Eickmann Karl Isshiki | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1528378A1 | Hydrostatic drive device with automatic power reduction with increasing pressure | |
| DE1453724A1 | Piston shoes and piston shoe guides in radial piston machines | |
| DE1453433A1 | Tangential balancing fields on pistons in rotary radial piston machines with liquid or gas operation | |
| DE1403748A1 | Piston with swiveling piston shoe |