Donald J. Ehrlich
10Patents
9h-index
6Co-inventors
65Inventor score
Filing activity: Aug 6, 1979 → Aug 23, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5622115A | Modular articulated railcar | Performing Operations; Transporting | 50 | Expired |
| US4703948A | Trailer floor assembly | Performing Operations; Transporting | 42 | Expired |
| US5685228A | Bi-tri-level deck system for a railcar | Performing Operations; Transporting | 41 | Expired |
| US5832836A | Modular articulated railcar | Performing Operations; Transporting | 31 | Expired |
| US4281870A | Vehicle convertible double deck system | Performing Operations; Transporting | 29 | Expired |
| US4455807A | Splice rail assembly | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US5601033A | Door structure for a railcar in an articulated train | Performing Operations; Transporting | 21 | Expired |
| US6675640B2 | Axle end wheel sensor for a vehicle, such as a truck or a trailer | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US6264286A | Control module for a brake system for a semi-trailer | Performing Operations; Transporting | 17 | Expired |
| US7472972B2 | Filing cabinet having a fireproof retractable door | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.