Inventor
Hiratani Takuo
JP8 patents
Patents
8 patentsUS11527866B2Dec 13, 2022
Semiconductor optical device
SUMITOMO ELECTRIC INDUSTRIES1 citations61
US11393945B2Jul 19, 2022
Optical semiconductor device and method for manufacturing optical semiconductor device
SUMITOMO ELECTRIC INDUSTRIES0 citations60
US12197003B2Jan 14, 2025
Optical filter and wavelength tunable laser element
SUMITOMO ELECTRIC INDUSTRIES0 citations50
US11777274B2Oct 3, 2023
Semiconductor optical device and method for manufacturing the same
SUMITOMO ELECTRIC INDUSTRIES0 citations50
US11735888B2Aug 22, 2023
Semiconductor optical device and method for producing semiconductor optical device
SUMITOMO ELECTRIC INDUSTRIES0 citations50
US12158609B2Dec 3, 2024
Semiconductor optical device and method for manufacturing the same
SUMITOMO ELECTRIC INDUSTRIES0 citations47
US10969543B2Apr 6, 2021
Semiconductor integrated optical device, and method of fabricating semiconductor integrated optical device
SUMITOMO ELECTRIC INDUSTRIES0 citations47
US10725241B2Jul 28, 2020
Asymmetrical spot-size converter and method of manufacturing spot-size converter
SUMITOMO ELECTRIC INDUSTRIES0 citations39