Walter Zenker
8Patents
7h-index
2Co-inventors
49Inventor score
Filing activity: Feb 3, 1975 → Apr 8, 1987
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4023418A | Change gear transmission in group construction, especially for land vehicles and vehicles for the building industry | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4106364A | Variable gear transmission | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4116090A | Change gear transmission in group arrangement, especially for motor vehicles for use in agriculture and in the construction field | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4108291A | Power take off with clutch and brake | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4580459A | Change-speed gear in group-type construction | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4494638A | Synchronizing device, especially for the transmission of a motor vehicle | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4287781A | Transmission with double friction clutch | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4776226A | Power takeoff shaft for a farm tractor | Emerging Cross-Sectional Technologies | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.