Koji Shimazawa
219Patents
24h-index
98Co-inventors
93Inventor score
Filing activity: Dec 18, 1998 → Dec 30, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6381107B1 | Magneto-resistive tunnel junction head having a shield lead rear flux guide | Physics | 70 | Expired |
| US6643104B2 | Magnetoresistive effect thin-film magnetic head | Physics | 50 | Expired |
| US8000178B2 | Near-field light generating element utilizing surface plasmon | Physics | 41 | Active |
| US7911882B2 | Thin-film magnetic head with near-field-light-generating layer | Physics | 40 | Active |
| US8116034B2 | Thermally assisted magnetic head having main pole arranged between near-field light-generating portions and manufacturing method of same | Physics | 39 | Active |
| US6603642B1 | MAGNETIC TRANSDUCER HAVING A PLURALITY OF MAGNETIC LAYERS STACKED ALTERNATELY WITH A PLURALITY OF NONMAGNETIC LAYERS AND A FIXED-ORIENTATION-OF-MAGNETIZATION LAYER AND THIN FILM MAGNETIC HEAD INCLUDING THE MAGNETIC TRANSDUCER | Physics | 37 | Expired |
| US6344954B1 | Magneto-resistive tunnel junction head with specific flux guide structure | Physics | 37 | Expired |
| US6469879B1 | Magneto-resistive tunnel junction head with biasing elements abutting free layer extended portions | Physics | 36 | Expired |
| US8077556B2 | Thermally assisted magnetic head, head gimbal assembly, and hard disk drive | Physics | 36 | Active |
| US8223597B2 | Thermally assisted head having reflection mirror for propagating light | Physics | 31 | Active |
| US6482657B2 | Methods of manufacturing tunnel magnetoresistive element, thin-film magnetic head and memory element | Physics | 31 | Expired |
| US6591481B2 | Method of manufacturing magnetoresistive device and method of manufacturing thin-film magnetic head | Emerging Cross-Sectional Technologies | 30 | Expired |
| US6413325B1 | Method for manufacturing thin-film magnetic head | Emerging Cross-Sectional Technologies | 29 | Expired |
| US6233127A | Thin film device provided with means for electrostatic breakdown prevention | Physics | 29 | Expired |
| US8213272B2 | Multilayered waveguide having protruded light-emitting end | Physics | 29 | Active |
| US6483675B1 | Tunnel magnetoresistance effect element | Emerging Cross-Sectional Technologies | 29 | Expired |
| US8107325B2 | Near-field light generating element comprising surface plasmon antenna with surface or edge opposed to waveguide | Physics | 28 | Active |
| US8023225B2 | Thermally assisted magnetic head with optical waveguide | Physics | 28 | Active |
| US6473257B1 | Method and apparatus for measuring characteristics of ferromagnetic tunnel magnetoresistance effect element, and hard disk drive | Physics | 27 | Expired |
| US6452385B1 | Magnetoresistive effect sensor with double-layered film protection layer | Emerging Cross-Sectional Technologies | 27 | Expired |
| US8149653B2 | Light source unit for thermally-assisted magnetic recording capable of monitoring of light output | Emerging Cross-Sectional Technologies | 27 | Active |
| US8248897B2 | Method for manufacturing thermally-assisted magnetic recording head comprising light source unit and slider | Physics | 25 | Active |
| US6219274A | Ferromagnetic tunnel magnetoresistance effect element and method of producing the same | Electricity | 25 | Expired |
| US6335081B1 | Tunnel magnetoresistance effect element | Emerging Cross-Sectional Technologies | 24 | Expired |
| US8393074B1 | Method of manufacturing thermally-assisted magnetic recording head and alignment apparatus | Emerging Cross-Sectional Technologies | 24 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.