Franz Krappmann
4Patents
3h-index
7Co-inventors
43Inventor score
Filing activity: Jan 24, 1979 → Jul 10, 1990
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5176189A | Device for transport of material between chambers at different pressures and process for operation of this device | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4193875A | Rotary filter | Performing Operations; Transporting | 3 | Expired |
| US4328099A | Multi-disk rotary filter | Performing Operations; Transporting | 3 | Expired |
| US4292177A | Pressurizable rotary filter | Performing Operations; Transporting | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.