Kensuke Ogawa
38Patents
11h-index
44Co-inventors
75Inventor score
Filing activity: May 5, 1989 → Mar 22, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5362972A | Semiconductor device using whiskers | Electricity | 262 | Expired |
| US5332910A | Semiconductor optical device with nanowhiskers | Electricity | 125 | Expired |
| US7065280B2 | Dispersion compensation device | Physics | 31 | Expired |
| US5455451A | Superconductized semiconductor device using penetrating Cooper pairs | Electricity | 27 | Expired |
| US5091980A | Optical quantum interference device/optical computer and method of modulating light using same | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4957337A | Optical quantum interference device and method of modulating light using same | Emerging Cross-Sectional Technologies | 21 | Expired |
| US9448425B2 | Optical waveguide element and optical modulator | Physics | 20 | Active |
| US9529151B2 | Polarization conversion element | Physics | 19 | Active |
| US5315573A | Non-linear optical saturable absorber layer in an optical disk to discriminate wavelength above or below a threshold level of intensity | Emerging Cross-Sectional Technologies | 17 | Expired |
| US9557482B2 | High-order polarization conversion device, optical waveguide device, and DP-QPSK modulator | Physics | 12 | Active |
| US6819428B2 | Instruments of optical pulse characterization | Physics | 12 | Expired |
| US9110348B2 | Optical element and Mach-Zehnder optical waveguide element | Physics | 10 | Active |
| US5485018A | Nanofabricated device for multiple-state logic operation | Electricity | 10 | Expired |
| US5033810A | Optical device | Physics | 9 | Expired |
| US8270789B2 | Optical waveguide element, chromatic dispersion compensator, methods for designing chromatic dispersion compensator, optical filter, methods for designing optical filter, optical resonator and methods for designing optical resonator | Physics | 9 | Active |
| US8270790B2 | Planar optical waveguide element, chromatic dispersion compensator, methods for designing chromatic dispersion compensator, optical filter, methods for designing optical filter, optical resonator and methods for designing optical resonator | Physics | 8 | Active |
| US9817294B2 | Optical modulation device | Physics | 7 | Active |
| US9857534B2 | Optical waveguide device having a light absorber for split out modes | Physics | 6 | Active |
| US7426038B2 | Detection device, optical path length measurement device, measurement instrument, optical member evaluation method, and temperature change detection method | Physics | 6 | Expired |
| US10921517B2 | Electro-optic waveguide device and optical module | Physics | 5 | Active |
| US9927637B2 | Optical waveguide element | Physics | 5 | Active |
| US8699013B2 | Chromatic dispersion measurement device and chromatic dispersion measurement method for measuring the dispersion of light pulses | Physics | 4 | Active |
| US9335472B2 | Planar optical waveguide device and DP-QPSK modulator | Physics | 3 | Active |
| US8404133B2 | Manufacturing method of planar optical waveguide device with grating structure | Physics | 3 | Active |
| US9880404B2 | Optical waveguide device and method of manufacturing the same | Physics | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.