Masami Emoto
15Patents
6h-index
13Co-inventors
63Inventor score
Filing activity: Jul 7, 1975 → May 22, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5070494A | Optical pickup device with dual-mode drive mechanism | Physics | 30 | Expired |
| US5073888A | Optical pickup device | Physics | 21 | Expired |
| US5025438A | Recording and reproducing optical information device which converts the first beam into a second beam having different light intensity distribution | Physics | 17 | Expired |
| US5815473A | Optical pickup device for detecting tracking error of optical disks with different track pitches | Physics | 16 | Expired |
| US5694385A | Optical pickup apparatus | Physics | 11 | Expired |
| US4684799A | Focus detection method involving cutting more than half of light beam reflected from disc | Physics | 10 | Expired |
| US4052127A | Developing system | Physics | 6 | Expired |
| US5337302A | Optical data recording/reproduction apparatus for use with semiconductor lasers as a light source | Physics | 6 | Expired |
| US4636625A | Method and device for detecting focal point | Physics | 6 | Expired |
| US5870370A | Optical pickup apparatus | Physics | 5 | Expired |
| US4687916A | Optical pick-up device for both focus and error tracking detection | Physics | 4 | Expired |
| USRE31371E | Developing system | General | 3 | Expired |
| US4683559A | Optical pickup with a two-detector arrangement | Physics | 3 | Expired |
| USRE40414E1 | Optical pickup apparatus | General | 2 | Expired |
| US4436415A | Exposure process for use in a variable magnification copying machine | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.