Werner Ruppert
15Patents
8h-index
13Co-inventors
69Inventor score
Filing activity: Dec 23, 1983 → Dec 6, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5251265A | Automatic signature verification | Physics | 51 | Expired |
| US5657396A | Method and apparatus for pattern recognition and validation, especially for hand-written signatures | Physics | 39 | Expired |
| US6765502B2 | Ergonomic keyboard device | Physics | 20 | Expired |
| US4628211A | Circuit arrangement for crosstalk compensation in electro-optical scanners | Electricity | 19 | Expired |
| US6125208A | Writing recognition unit | Physics | 15 | Expired |
| US5864926A | Spring band clamp | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5621816A | Method and apparatus for elimination of color from multi-color image documents | Physics | 11 | Expired |
| USD363031S | Test document | General | 10 | Expired |
| US6373982B1 | Process and equipment for recognition of a pattern on an item presented | Physics | 8 | Expired |
| US4609818A | Opto-electronic scanning apparatus with rotary plate scanning element | Electricity | 8 | Expired |
| US5715579A | Spring band clamp | Emerging Cross-Sectional Technologies | 4 | Expired |
| USRE38275E1 | Method and apparatus for elimination of color from multi-color image documents | General | 3 | Expired |
| USD399764S | Test document for scanners | General | 2 | Expired |
| US11774003B2 | Valve | Performing Operations; Transporting | 1 | Active |
| US12005775B2 | Valve assembly for a fuel tank | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.