Keiichiro Yusu
34Patents
11h-index
40Co-inventors
71Inventor score
Filing activity: Mar 11, 1994 → Dec 26, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6554972B1 | Information recording medium and its manufacturing method | Emerging Cross-Sectional Technologies | 52 | Expired |
| US6174597A | Magnetic recording apparatus | Emerging Cross-Sectional Technologies | 39 | Expired |
| US5534355A | Artificial multilayer and method of manufacturing the same | Emerging Cross-Sectional Technologies | 39 | Expired |
| US7214416B2 | Phase-change optical recording medium | Emerging Cross-Sectional Technologies | 32 | Expired |
| US6114056A | Magnetic element, and magnetic head and magnetic memory device using thereof | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5616370A | Artificial multilayer and method of manufacturing the same | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5889756A | Phase change optical recording medium | Physics | 24 | Expired |
| US5981054A | Magnetic recording medium and method for manufacturing the same | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5585196A | Magnetoresistance effect element | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6296915A | Optical recording medium | Emerging Cross-Sectional Technologies | 15 | Expired |
| US7245576B2 | Optical recording medium and optical recording-reproducing method | Physics | 11 | Expired |
| US5773156A | Magnetoresistance effect element | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6805935B2 | Optical recording medium | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6240060A | Phase change optical recording medium | Physics | 6 | Expired |
| US5723978A | Photo-inducible magnetic exchange coupling device | Electricity | 5 | Expired |
| US7455951B2 | Information recording medium and its manufacturing method | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6944116B2 | Optical information recording medium | Physics | 4 | Expired |
| US7357969B2 | Phase-change optical recording medium | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7542404B2 | Optical recording media | Physics | 3 | Active |
| US5997978A | Phase change optical recording medium and optical recording method | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6842419B2 | Optical information recording medium and optical disk drive | Physics | 3 | Expired |
| US7335459B2 | Phase-change optical recording medium | Physics | 3 | Expired |
| US7858166B2 | Phase change recording medium | Emerging Cross-Sectional Technologies | 2 | Active |
| US7291375B2 | Phase-change optical recording medium | Emerging Cross-Sectional Technologies | 1 | Active |
| US7132147B2 | Phase-change optical recording medium | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.