Ingolf Grauel
6Patents
5h-index
7Co-inventors
45Inventor score
Filing activity: Jul 7, 1982 → Nov 7, 1984
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4616881A | Tractor-trailer brake system including a trailer brake control valve | Performing Operations; Transporting | 39 | Expired |
| US4585278A | Brake system for vehicle combinations | Performing Operations; Transporting | 14 | Expired |
| US4632466A | Dual-circuit pressure medium brake system | Performing Operations; Transporting | 10 | Expired |
| US4919492A | Multiple-circuit brake system | Performing Operations; Transporting | 10 | Expired |
| US4603919A | Dual control pressure medium brake system | Performing Operations; Transporting | 5 | Expired |
| US4496192A | Pressure medium brake system | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.