Wilhelm Hell
6Patents
3h-index
11Co-inventors
54Inventor score
Filing activity: Nov 4, 1988 → Jan 15, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5039020A | Method and apparatus for automatically monitoring the destruction of thin sheet material | Performing Operations; Transporting | 27 | Expired |
| US5310036A | Method for checking the correct processing of bank notes | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6098978A | Device for changing the moving direction of a flat rectangular sheetlike product | Performing Operations; Transporting | 9 | Expired |
| US4906827A | Apparatus for automatically cancelling bank notes | Physics | 1 | Expired |
| US7661617B2 | Device and method for canceling sheet material | Performing Operations; Transporting | 1 | Expired |
| US8002210B2 | Apparatus for canceling sheet material | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.