NIDEC CORPORATION
1,472Patents
1,317Active
1,472Granted
64Portfolio score
Filing activity: Jul 27, 1988 → Oct 21, 2024 · 210 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6860713B2 | Fan with collapsible blades, redundant fan system, and related method | Mechanical Engineering; Lighting; Heating | 252 | Expired |
| US10374544B2 | Method for estimating service life of motor, motor control system, blower system, and multicopter system | Electricity | 208 | Active |
| US5610462A | Brushless motor | Electricity | 73 | Expired |
| US6246136A | Motor and method for manufacturing the same | Mechanical Engineering; Lighting; Heating | 57 | Expired |
| US5559382A | Spindle motor | Mechanical Engineering; Lighting; Heating | 54 | Expired |
| US6066903A | Hydrodynamic bearing for use in an electric motor and an electric motor having the hydrodynamic bearing | Mechanical Engineering; Lighting; Heating | 48 | Expired |
| US6211592A | Motor for driving storage disks | Mechanical Engineering; Lighting; Heating | 48 | Expired |
| US6097121A | Spindle motor design facilitating and ensuring precise assembly of the motor | Emerging Cross-Sectional Technologies | 45 | Expired |
| US5880545A | Spindle motor with bearing system having fluid sealing and leakage prevention | Mechanical Engineering; Lighting; Heating | 44 | Expired |
| US4934041A | Method of assembling brushless electric motors | Emerging Cross-Sectional Technologies | 43 | Expired |
| US5707154A | Hydrodynamic fluid pressure bearings | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US5452181A | Detachable apparatus for cooling integrated circuits | Electricity | 42 | Expired |
| US6205110A | Disk drive motor | Physics | 40 | Expired |
| US5982064A | DC motor | Mechanical Engineering; Lighting; Heating | 40 | Expired |
| US5658080A | Motor with a hydro-dynamic bearing | Mechanical Engineering; Lighting; Heating | 40 | Expired |
| US5484262A | Low profile fan body with heat transfer characteristics | Electricity | 39 | Expired |
| US7012191B1 | Lead wire sealing device, recording disk drive, and method for sealing housing member | Electricity | 39 | Expired |
| US7403269B2 | Scanning rangefinder | Physics | 37 | Expired |
| US5831355A | Spindle motor | Emerging Cross-Sectional Technologies | 36 | Expired |
| US8120872B2 | Spindle motor and disk drive apparatus | Electricity | 36 | Active |
| US5663604A | Brushless motor | Emerging Cross-Sectional Technologies | 34 | Expired |
| US10164344B2 | Waveguide device, slot antenna, and radar, radar system, and wireless communication system including the slot antenna | Electricity | 32 | Active |
| US6361214B1 | Hydrodynamic-pressure bearing device and motor provided with the hydrodynamic-pressure bearing device | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US6456458B1 | Disk-drive motor rotating on a magnetically counterbalanced single hydrodynamic thrust bearing | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US6339270B1 | Motor for driving storage disks, and storage disk drive device provided therewith | Mechanical Engineering; Lighting; Heating | 31 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.