Robert E. Zimmerman
6Patents
6h-index
8Co-inventors
52Inventor score
Filing activity: Mar 28, 1978 → Dec 20, 1988
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4926331A | Truck operation monitoring system | Physics | 200 | Expired |
| US4233909A | Railway car assembly composed of a series of articulately interconnected cars | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4346790A | Articulated car brake system | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4580767A | Electric fence including a ribbed tubular sleeve insulator | Electricity | 14 | Expired |
| US4786860A | Missing wire detector | Electricity | 12 | Expired |
| US4846245A | Folding door apparatus | Fixed Constructions | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.