Yoichi Sekii
64Patents
6h-index
58Co-inventors
71Inventor score
Filing activity: Nov 8, 2004 → Aug 5, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8120872B2 | Spindle motor and disk drive apparatus | Electricity | 36 | Active |
| US6980394B2 | Spindle motor and recording disk driving device comprising the same | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US8379345B2 | Spindle motor having dynamic pressure fluid bearing for use in a storage disk drive | Mechanical Engineering; Lighting; Heating | 10 | Active |
| US8385017B2 | Spindle motor including fluid bearing and storage disk drive including the same | Mechanical Engineering; Lighting; Heating | 9 | Active |
| US8724257B2 | Hydrodynamic bearing apparatus and spindle motor and disk drive apparatus including the same | Mechanical Engineering; Lighting; Heating | 9 | Active |
| US8284515B2 | Fluid dynamic pressure bearing device, spindle motor and disk drive apparatus | Mechanical Engineering; Lighting; Heating | 8 | Active |
| US8873198B1 | Motor and disk drive apparatus | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US8169738B1 | Fluid dynamic bearing mechanism including communicating channel, spindle motor, and disk drive apparatus | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US8879204B2 | Motor and disk drive apparatus | Electricity | 5 | Active |
| US8520335B2 | Spindle motor including hydrodynamic bearing and storage disk drive including same | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US8056210B2 | Manufacturing method for motor | Emerging Cross-Sectional Technologies | 4 | Active |
| US8284513B2 | Fluid dynamic pressure bearing device, spindle motor and disk drive apparatus | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US8358483B2 | Spindle motor including annular magnetic member and disk drive apparatus including such a spindle motor | Electricity | 4 | Active |
| US8711514B2 | Motor and disk drive apparatus | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US8724256B2 | Bearing apparatus, spindle motor, and disk drive apparatus | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US8553355B2 | Spindle motor and storage disk drive | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US8144423B2 | Fluid dynamic pressure bearing device, spindle motor and disk drive apparatus | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8941946B2 | Motor including dynamic bearing with seal portion and disk drive apparatus including the same | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8794839B2 | Bearing apparatus, spindle motor, and disk drive apparatus | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US7374340B2 | Fluid dynamic-pressure bearing, spindle motor and recording disk driving device | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US7550887B2 | Spindle motor and method of manufacturing spindle motor | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8922945B2 | Disk drive spindle motor with wiring substrate having extension portion passing through opening in base | Electricity | 2 | Active |
| US8508884B2 | Spindle motor including magnetic member and disk drive apparatus including same | Electricity | 2 | Active |
| US8542459B2 | Spindle motor and storage disk drive | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US10476329B2 | Motor including a seal covering a high reflectivity metallic surface of a rotor hub | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.