NIDEC COPAL CORPORATION
258Patents
161Active
258Granted
53Portfolio score
Filing activity: Apr 17, 1998 → Dec 9, 2022 · 47 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD450378S | Fan motor | General | 54 | Expired |
| US9906109B2 | Vibration actuator | Electricity | 36 | Active |
| US7128459B2 | Light-guide plate and method for manufacturing the same | Physics | 32 | Expired |
| US6783287B2 | Focal-plane shutter for digital camera | Physics | 29 | Expired |
| US7156564B2 | Blade driving device for use in cameras | Physics | 24 | Expired |
| US7193793B2 | Imaging lens | Physics | 24 | Expired |
| US9692286B2 | Vibration actuator | Electricity | 23 | Active |
| US7567001B2 | Compact fan motor and electric device comprising a compact fan motor | Electricity | 20 | Active |
| US6439104B1 | Small size air pump | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6714733B2 | Step motor with interpole pair stabilizing rest position | Electricity | 17 | Expired |
| US6985306B2 | Photographing lens | Physics | 17 | Expired |
| USD705816S1 | Motor | General | 16 | Active |
| US6757111B2 | Zoom lens | Physics | 15 | Expired |
| US7230779B2 | ND filter and aperture diaphragm apparatus | Physics | 15 | Expired |
| USD464621S1 | Motor | General | 15 | Expired |
| USD706304S1 | Motor | General | 14 | Active |
| US6070482A | Gear module | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6740999B1 | Motor | Electricity | 12 | Expired |
| US6749348B2 | Focal-plane shutter for digital still camera | Physics | 12 | Expired |
| US7410310B2 | Blade driving apparatus for cameras | Electricity | 12 | Expired |
| US6443635B1 | Electromagnetic actuator with auto-retaining of rotor at triple positions | Electricity | 12 | Expired |
| US6784417B2 | Optical encoder | Physics | 12 | Expired |
| US6818287B1 | Light shielding blade material for optical apparatus | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6388414B1 | Step motor driving apparatus | Physics | 11 | Expired |
| US7619337B2 | Brushless motor, brushless type fan motor and electric device comprising a brushless type fan motor | Electricity | 11 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.