Masahiro Aoki
100Patents
18h-index
135Co-inventors
89Inventor score
Filing activity: Dec 22, 1975 → Jul 11, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5784183A | Semiconductor optical device and method for fabricating the same | Electricity | 53 | Expired |
| US5348997A | Crosslinking aqueous pigment dispersion | Chemistry; Metallurgy | 43 | Expired |
| US5737474A | Semiconductor optical device | Electricity | 39 | Expired |
| US6757499B1 | Optical transmitter and optical signal transmitter | Electricity | 37 | Expired |
| US5574289A | Semiconductor optical integrated device and light receiver using said device | Electricity | 37 | Expired |
| US5561682A | Semiconductor optical device and method for fabricating the same | Electricity | 29 | Expired |
| US6700910B1 | Wavelength tunable laser and optical device | Electricity | 28 | Expired |
| US6428171B1 | Height measuring apparatus | Physics | 25 | Expired |
| US4540881A | Method of detecting focusing conditions | Physics | 25 | Expired |
| US5764842A | Semiconductor guided-wave optical device and method of fabricating thereof | Electricity | 22 | Expired |
| US4483602A | Apparatus for detecting a focusing condition of an objective lens | Physics | 21 | Expired |
| US4492449A | Apparatus and technique for detecting and controlling the focusing of an optical system by image sharpness and lateral shift techniques | Physics | 21 | Expired |
| US6546034B2 | Semiconductor laser device, semiconductor laser array device and optical fiber transmission system | Electricity | 21 | Expired |
| US5008329A | Process for producing aqueous copolymer dispersion from a vinyl monomer mixture | Chemistry; Metallurgy | 20 | Expired |
| US4562346A | Apparatus and method for detecting focus condition of imaging optical system employing both sharpness detection and lateral shift detection | Physics | 20 | Expired |
| US5432229A | Aqueous crosslinkable resin composition | Chemistry; Metallurgy | 20 | Expired |
| US5351544A | Measuring apparatus using an ultrasonic wave to provide flaking state detection for a specimen on the basis of freqency analysis of a wave reflected by the specimen | Physics | 19 | Expired |
| US5543353A | Method of manufacturing a semiconductor photonic integrated circuit | Electricity | 19 | Expired |
| US4957677A | Process for producing composite laminate comprising insert part and injection-molded part | Performing Operations; Transporting | 18 | Expired |
| US5472996A | Aqueous dispersed resin composition | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4070694A | Picture image information band compression and transmission system | Electricity | 17 | Expired |
| US4500189A | Apparatus for detecting the focus condition of an imaging lens | Physics | 17 | Expired |
| US6236771A | Optical transmission apparatus | Electricity | 17 | Expired |
| US7970041B2 | Semiconductor laser apparatus | Electricity | 16 | Active |
| US8036533B2 | Optical transmitter/receiver module | Physics | 16 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.