Shigeru Oohchida
8Patents
4h-index
14Co-inventors
50Inventor score
Filing activity: Jun 24, 1999 → May 10, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6584060B1 | Optical pick-up device for recording/reading information on optical recording medium | Physics | 19 | Expired |
| US6822771B2 | Optical pickup unit and optical disk drive for accurate and stable information recording and reproduction | Physics | 7 | Expired |
| US7164532B2 | Diffraction grating, light source unit applying the same therein, and optical head device employing the same | Physics | 6 | Expired |
| US7110180B2 | Diffraction grating, method of fabricating diffraction optical element, optical pickup device, and optical disk drive | Physics | 5 | Expired |
| US7577076B2 | Tilt sensor using diffraction grating | Physics | 4 | Expired |
| US6845077B2 | Optical pick-up device with convergent light diffraction for recording/reading information on optical recording medium | Physics | 2 | Expired |
| US7511887B2 | Diffraction grating, method of fabricating diffraction optical element, optical pickup device, and optical disk drive | Physics | 1 | Active |
| US8760501B2 | Stereo camera apparatus and vehicle-mountable monitoring apparatus using same | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.