Mitsuya Okada
16Patents
6h-index
13Co-inventors
59Inventor score
Filing activity: Feb 29, 1988 → Aug 21, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5708653A | Single-substrate multi-layer optical disk for read-only storage and phase change rewritable storage | Physics | 33 | Expired |
| US5631895A | Optical information recording medium | Physics | 18 | Expired |
| US5521901A | Re-writable phase change type optical disk with suppressed recording mark distortion | Physics | 17 | Expired |
| US5878022A | High density optical information recording medium using high refractive index layer | Physics | 15 | Expired |
| US4862437A | Magneto-optical recording reproducing, and erasing apparatus having two independent magnetic field applying devices | Physics | 14 | Expired |
| US6115336A | Apparatus for optically recording data into a disc | Physics | 12 | Expired |
| US7489620B2 | Optical information recording and reproducing medium | Physics | 4 | Expired |
| US5381395A | Information detection of a phase-change type optical recording medium by shifting the phase of a reference light | Physics | 4 | Expired |
| US5798993A | System and method for simultaneously verifying optical data writing and optical data writing medium for use therein | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6606293B1 | Optical information recording medium and methods for recording, reading, and erasing information thereupon | Physics | 3 | Expired |
| US5862122A | Phase change optical disk and a method for recording and playbacking optical information on or from an optical disk | Physics | 1 | Expired |
| US5906908A | System and method for simultaneously verifying optical data writing and optical data writing medium for use therein | Emerging Cross-Sectional Technologies | 1 | Expired |
| US6117511A | Optical recording media | Emerging Cross-Sectional Technologies | 1 | Expired |
| US6122243A | Optical information recording apparatus, optical recording medium, and method or judging tracking polarity of optical recording medium | Physics | 0 | Expired |
| US6807143B1 | Information-recording medium and information reproducing apparatus | Physics | 0 | Expired |
| US7102990B2 | Optical information-recording medium and optical information recording/reproducing method | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.