Volkmar Leutner
15Patents
7h-index
22Co-inventors
66Inventor score
Filing activity: Jun 28, 1974 → Dec 5, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4478136A | Electrohydraulic control arrangement for hydrostatic machine | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4423747A | Pressure regulating valve | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4777982A | Elastic separating wall | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4120631A | Injection-molding machine for synthetic plastic material | Performing Operations; Transporting | 11 | Expired |
| US5752427A | Adjustable hydro-static radial piston machine | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4480202A | Magnetic linear drive | Electricity | 7 | Expired |
| US5980215A | Adjustable hydrostatic pump with additional pressure change control unit | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6065496A | Electromagnetically operated directional valve | Emerging Cross-Sectional Technologies | 5 | Expired |
| US3965918A | Electro-fluidic signal converter | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5421294A | Hydraulic setting device | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5197709A | Electromagnetic directional control valve | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4429619A | Control system for a hydraulic load | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4890647A | Hydraulic control valve | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6464590B2 | Hydraulic aggregate with at least one displacement machine | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US5879136A | Electrohydraulic adjustable pump | Mechanical Engineering; Lighting; Heating | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.