Ralf Grief
5Patents
1h-index
10Co-inventors
44Inventor score
Filing activity: Apr 24, 2002 → Jan 31, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7198332B2 | Device for producing a gas-liquid mixture in the vicinity of cutting tools | Fixed Constructions | 6 | Expired |
| US6785988B2 | Driving or mining machine | Fixed Constructions | 1 | Expired |
| US7175237B2 | Hewing or cutting roll | Fixed Constructions | 0 | Expired |
| US10781641B2 | Rotary claw drill bit | Fixed Constructions | 0 | Active |
| US11299987B2 | Heading machine with cusp cutter | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.