Roberto Zafferri
8Patents
4h-index
7Co-inventors
50Inventor score
Filing activity: Nov 7, 1978 → Nov 20, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4371821A | Electromagnetic motor rotatable in either direction | Electricity | 27 | Expired |
| US4361790A | Electromagnetic motor rotatable in either direction | Electricity | 19 | Expired |
| US4271498A | Watch | Physics | 15 | Expired |
| US4258432A | Electro-acoustic device for alarm watch | Physics | 15 | Expired |
| US5579290A | Epicycloidal step motor | Electricity | 4 | Expired |
| US6374010B1 | Optical switch | Physics | 3 | Expired |
| US6903469B2 | Stepping motor | Electricity | 1 | Expired |
| US5614779A | Electronic watch | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.