Shigeo Obata
18Patents
5h-index
28Co-inventors
58Inventor score
Filing activity: Oct 14, 1999 → Jul 24, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6826018B2 | Disk drive with head supporting device | Physics | 17 | Expired |
| US6965492B2 | Rotor assembly, information-recording/-reproducing device using the rotor assembly and method of assembling the rotor assembly | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US6217218A | Hydrodynamic bearing spindle motor | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US7382076B2 | Spindle motor | Physics | 8 | Active |
| US7265939B2 | Spindle motor and disk drive unit | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US7317271B2 | Fluid bearing motor, and disk drive mounted with same | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US7435001B2 | Hydrodynamic bearing device, method for manufacturing the same, spindle motor and recording and reproduction apparatus | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US7110221B2 | Disk drive | Physics | 4 | Expired |
| US7249363B2 | Spindle motor, information recording and reproducing apparatus having a spindle motor, and manufacturing method of spindle motor | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US7911734B2 | Spindle motor with a magnetic shield plate having an inclined annular face | Electricity | 3 | Active |
| US7084536B2 | Fluid bearing motor, and disk drive mounted with same | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US7787214B2 | Disk device | Physics | 3 | Active |
| US8033732B2 | Hydrodynamic bearing device, and spindle motor equipped with same | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US7663280B2 | Spindle motor and disk drive device using the same | Electricity | 2 | Active |
| US7448805B2 | Thrust dynamic pressure bearing, spindle motor using thereof, and information recording/reproducing device using the spindle motor | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US6411465B1 | Rotary head drum assembly with upper, lower and inner drums with cylindrical surfaces of differing outward radial position | Physics | 2 | Expired |
| US6915557B2 | Method of assembling rotor structure | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7160031B2 | Thrust dynamic pressure bearing, spindle motor using the same, and information recording and reproducing apparatus using them | Mechanical Engineering; Lighting; Heating | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.