Walter Johnsen
4Patents
4h-index
3Co-inventors
47Inventor score
Filing activity: Oct 26, 1978 → Nov 8, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4212492A | Roll-up truck bed cover | Performing Operations; Transporting | 39 | Expired |
| US4248475A | Bow assembly for truck bed covers | Performing Operations; Transporting | 36 | Expired |
| US7934319B2 | Pencil-sharpening device | Emerging Cross-Sectional Technologies | 6 | Active |
| USD259620S | Fastening device for tie down straps on tarpaulins and the like | General | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.