Dankwart Eiermann
48Patents
9h-index
12Co-inventors
72Inventor score
Filing activity: Aug 28, 1975 → May 18, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4487561A | Rotary piston compressor | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US4218199A | Rotary piston compressor with no negative torque | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US5609475A | Compressor with a hypotrochoidal design having a fluid delivery which is not solely dependent on a drive RPM | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US3993029A | Method of operating a compound supercharged rotary piston engine | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4127364A | Heat pump unit | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4464102A | External axis rotary piston compressor | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4241758A | Pressure valve, especially for rotary piston compressors | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5039289A | Rotary piston blower having piston lobe portions shaped to avoid compression pockets | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4150926A | Rotary piston compressor with transfer flow pockets in housing | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US7500461B2 | Rotary combustion engine, designed for diesel fuel | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4278409A | Compressor | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4127369A | Pressure valve for a rotary piston compressor | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4830591A | Lubrication system for a rotary-piston internal combustion engine | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4080120A | Inner seal for rotary piston engines and method of making same | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4063535A | Rotary piston internal combustion engine | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4149834A | Delivery valve, especially for rotary piston compressors | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4850827A | Cooling system of an eccentric shaft of a rotary piston internal combustion engine | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4793304A | Arrangement for cooling the piston of a rotary piston internal combustion engine | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4779578A | Fluid-cooled housing of a rotary piston internal combustion engine | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4056338A | Rotary piston engine | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5011385A | Bearing- and drive arrangement of a rotary piston internal combustion engine | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6481989B2 | Trochoidal design rotary piston engine and method of making same | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4824125A | Axial seal for a rotary-piston engine | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4165209A | External axle rotary piston machine | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US5100309A | Cooling medium pump of a rotary piston internal combustion engine | Mechanical Engineering; Lighting; Heating | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.