Oswald Friedmann
116Patents
21h-index
51Co-inventors
93Inventor score
Filing activity: Jun 6, 1979 → Apr 22, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5217412A | Continuously variable speed transmission | Mechanical Engineering; Lighting; Heating | 57 | Expired |
| US5377796A | Apparatus for transmitting force between rotary driving and driven units | Mechanical Engineering; Lighting; Heating | 48 | Expired |
| US5295915A | Continuously variable speed transmission | Mechanical Engineering; Lighting; Heating | 44 | Expired |
| US4732250A | Torque transmitting and torsion damping assembly | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US5169365A | Power train | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| US5667448A | Power train | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| US5273372A | Apparatus for damping vibrations | Mechanical Engineering; Lighting; Heating | 34 | Expired |
| US4626696A | Flywheel propulsion system for automotive vehicles or the like | Emerging Cross-Sectional Technologies | 33 | Expired |
| US6059682A | Apparatus for cooling clutches on a transmission shaft | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US5156249A | Torque transmitting apparatus with axially deformable primary flywheel | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US5725447A | Power train with infinitely variable ratio transmission | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US4611701A | Torsion damping assembly for use in motor vehicles | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US5046991A | Continuously variable speed transmission | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US6435994B1 | Continuously variable transmission | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US5879253A | Torque monitoring apparatus | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US5261516A | Twin-flywheel apparatus for transmitting torque in the power train of motor vehicle | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4816006A | Vibration damping apparatus | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4723463A | Assembly for taking up and compensating for torque-induced shocks | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US5150777A | Apparatus for transmitting torque between the engine and the transmission of a motor vehicle | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US4458156A | Flywheel propulsion system for automotive vehicles or the like | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5180335A | Torsion damping assembly for use with clutches in motor vehicles | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US5269725A | Torsion damping apparatus for use with friction clutches in the power trains of motor vehicles | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US6648781B1 | Continuously variable transmission | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US8327990B2 | Clutch unit | Mechanical Engineering; Lighting; Heating | 19 | Active |
| US7108626B2 | Drive assembly | Emerging Cross-Sectional Technologies | 19 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.