Josef Birkmann
4Patents
3h-index
4Co-inventors
39Inventor score
Filing activity: Jun 1, 1987 → Feb 5, 1993
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5474250A | Winding device for magnetic tapes | Performing Operations; Transporting | 19 | Expired |
| US5279470A | Winding mandrel tensioning means | Performing Operations; Transporting | 8 | Expired |
| US5085110A | Cutting device for the longitudinal cutting of foil lengths | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4805848A | Clamping device for the hubs of reels of magnetic tape | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.