Jun Ushida
21Patents
7h-index
22Co-inventors
65Inventor score
Filing activity: Mar 26, 2003 → Feb 12, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8269303B2 | SiGe photodiode | Emerging Cross-Sectional Technologies | 25 | Active |
| US8467637B2 | Waveguide path coupling-type photodiode | Physics | 21 | Active |
| US8532440B2 | Silicon-based electro-optic device | Physics | 11 | Active |
| US8913860B2 | Optical waveguide structure and optical waveguide device | Physics | 9 | Active |
| US8078021B2 | Waveguide connecting structure | Physics | 9 | Active |
| US9002144B2 | Electro-optical modulator | Physics | 8 | Active |
| US8873895B2 | Optical modulator | Electricity | 7 | Active |
| US7359606B2 | Photonic crystal optical circuit and method for controlling the same | Physics | 3 | Expired |
| US8422837B2 | Semiconductor device | Electricity | 3 | Active |
| US8936962B2 | Optical modulator and method for manufacturing same | Physics | 3 | Active |
| US10025031B2 | Grating structure, and manufacturing method of grating coupler provided therewith | Physics | 2 | Active |
| US7715665B2 | Photonic crystal optical circuit and method for controlling the same | Physics | 2 | Active |
| US9274280B2 | Optical waveguide type optical terminator | Physics | 2 | Active |
| US7020373B2 | Antireflective coating structure for photonic crystal and method for forming antireflective coating structure | Physics | 1 | Expired |
| US8483520B2 | Optical modulation structure and optical modulator | Physics | 1 | Active |
| US9971099B2 | Grating coupler with high optical coupling efficiency for SMF | Physics | 1 | Active |
| US7778509B2 | Method for incidence of light into a photonic crystal optical waveguide and structure thereof | Physics | 1 | Active |
| US10535786B2 | Photodetector having one-dimensional grating structure | Physics | 0 | Active |
| US8363989B2 | Semiconductor optical interconnection device and semiconductor optical interconnection method | Electricity | 0 | Active |
| US11137546B2 | Optical element | Physics | 0 | Active |
| US9020312B2 | Connecting channel | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.