Kyo Akagi
35Patents
11h-index
71Co-inventors
78Inventor score
Filing activity: Mar 30, 1990 → Oct 24, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5390061A | Multilayer magnetoresistance effect-type magnetic head | Emerging Cross-Sectional Technologies | 109 | Expired |
| US5325244A | Magnetic recording data storage system | Physics | 40 | Expired |
| US6590729B1 | Magnetic disk drive with servo signal decoder using amplitude detection and phase detection system | Physics | 39 | Expired |
| US5766718A | Longitudinal magnetic recording medium and apparatus | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5568331A | Method of head positioning and magnetic recording disk drive using the same | Physics | 36 | Expired |
| US5726837A | Multilayer magnetoresistance effect-type magnetic head | Emerging Cross-Sectional Technologies | 31 | Expired |
| US5093822A | High-density magnetic recording and optical reproducing apparatus | Physics | 29 | Expired |
| US8797672B2 | Dynamic track pitch control for shingled magnetic recording (SMR) | Physics | 22 | Active |
| US6687099B2 | Magnetic head with conductors formed on endlayers of a multilayer film having magnetic layer coercive force difference | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6987635B2 | Magnetic disk drive which accesses host RAM | Physics | 17 | Expired |
| US6011674A | Magnetoresistance effect multilayer film with ferromagnetic film sublayers of different ferromagnetic material compositions | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6594107B2 | Magnetic disc apparatus having wiring on the outer bottom | Physics | 11 | Expired |
| US6278593A | Magnetoresistance effect elements and magnetic heads using the tunneling magnetoresistive effect | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5736235A | Magnetic recording medium having at least two magnetic layers with easy axes oriented in the same direction | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6130797A | Magnetic recorder and magnetooptical recorder | Physics | 8 | Expired |
| US5557486A | Thin external memory unit with hard disk | Physics | 8 | Expired |
| US5786952A | Magnetic digital storage method and system wherein magnetic transition points in adjacent recorded tracks are out of phase with each other | Physics | 7 | Expired |
| US5253232A | Magneto-optical recording apparatus having a magnetic slider with increased rail width | Physics | 7 | Expired |
| US6483660B1 | Disk drive unit having multiple disks arranged in a plane | Physics | 6 | Expired |
| US6483677B2 | Magnetic disk apparatus including magnetic head having multilayered reproducing element using tunneling effect | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5606472A | Disk unit | Physics | 5 | Expired |
| US7054120B2 | Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effect | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7159303B2 | Method for manufacturing magnetic head device | Emerging Cross-Sectional Technologies | 5 | Expired |
| US8482877B2 | Magnetic recording media, method for servowriting on same, and hard disk drive | Physics | 3 | Active |
| US6687072B2 | Disk apparatus and information processing system discriminative plural external electronic appliances | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.