Shouji Nakajima
12Patents
5h-index
11Co-inventors
63Inventor score
Filing activity: Apr 28, 1986 → Oct 9, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7639446B2 | Disk drive device and servo write method | Physics | 23 | Active |
| US7639445B2 | Disk drive device and head positioning control method | Physics | 15 | Active |
| US7675705B2 | Method and apparatus for writing servo pattern using spiral pattern in disk drive | Physics | 14 | Active |
| US4722010A | Read circuit for floppy disk drive | Physics | 14 | Expired |
| US7477472B2 | Method and apparatus for writing servo data in a disk drive using spiral servo patterns | Physics | 9 | Active |
| US7423835B2 | Method and apparatus for servo control using spiral servo information in a disk drive | Physics | 5 | Active |
| US7855850B2 | Method and apparatus for head positioning using spiral servo patterns in a disk drive | Physics | 4 | Active |
| US7710682B2 | Method and apparatus for writing spiral servo pattern in a disk drive | Physics | 4 | Active |
| US7630161B2 | Method and apparatus for writing spiral servo pattern in a disk drive | Physics | 4 | Active |
| US5043837A | Alignment disk for magnetic head azimuth correction | Physics | 3 | Expired |
| US7852593B2 | Method and apparatus for writing servo data, using spiral servo patterns in a disk drive | Physics | 2 | Active |
| US7804659B2 | Method and apparatus for positioning head using spiral servo pattern in a disk drive | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.