Hans Drewitz
15Patents
10h-index
7Co-inventors
61Inventor score
Filing activity: Sep 12, 1977 → Mar 23, 1990
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4446756A | Power divider gearbox with a planetary differential gear drive | Mechanical Engineering; Lighting; Heating | 36 | Expired |
| US4959962A | Starter system for automatically turning off and restarting a motor vehicle engine | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4976664A | Vehicle drive transmission having a high power ratio | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4762191A | Articulated vehicle selectively driven at two axles from two power sources | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4778020A | Utility vehicle designed for frequent starting and stopping | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US4843907A | Hydromechanical power splitting transmission for vehicles | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4647084A | Pipe connection | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4825722A | Hydromechanical transmission for motor vehicles | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5052987A | Stepless hydrostatic-mechanical transmission | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4216684A | Hybrid drive for motor vehicles | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4469187A | Articulated bus | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4875557A | Brake play resetting device | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4716730A | Hydrostatic drive | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US4473127A | Multiple-link articulated bus | Performing Operations; Transporting | 3 | Expired |
| US4342370A | Articulated omnibus | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.