Inventor
KATAOKA YU
JP16 patents
Patents
16 patentsUS11656487B2May 23, 2023
Optical waveguide element, and optical modulation device and optical transmission apparatus using optical waveguide element
SUMITOMO OSAKA CEMENT CO LTD5 citations73
US12339529B2Jun 24, 2025
Optical modulator and optical transmission device using same
SUMITOMO OSAKA CEMENT CO LTD2 citations71
US11977284B2May 7, 2024
Optical waveguide device, manufacturing method of optical modulation element, optical modulator, optical modulation module, and optical transmission apparatus
SUMITOMO OSAKA CEMENT CO LTD3 citations70
US11378828B2Jul 5, 2022
Optical waveguide device
SUMITOMO OSAKA CEMENT CO LTD2 citations65
US12197052B2Jan 14, 2025
Optical waveguide element
SUMITOMO OSAKA CEMENT CO LTD0 citations62
US12025833B2Jul 2, 2024
Optical waveguide element
SUMITOMO OSAKA CEMENT CO LTD0 citations62
US10591670B2Mar 17, 2020
Optical waveguide element
SUMITOMO OSAKA CEMENT CO LTD1 citations62
US12422628B2Sep 23, 2025
Optical waveguide element, and optical modulation device and optical transmission apparatus using same
SUMITOMO OSAKA CEMENT CO LTD0 citations58
US12399413B2Aug 26, 2025
Optical waveguide element and optical modulator
SUMITOMO OSAKA CEMENT CO LTD0 citations58
US12259631B2Mar 25, 2025
Optical control element, optical modulation device using same, and optical transmission apparatus
SUMITOMO OSAKA CEMENT CO LTD0 citations51
US11099324B2Aug 24, 2021
Optical waveguide device
SUMITOMO OSAKA CEMENT CO LTD0 citations51
US12504656B2Dec 23, 2025
Optical waveguide element, optical waveguide device, and optical transmission apparatus
SUMITOMO OSAKA CEMENT CO LTD0 citations50
US11215754B2Jan 4, 2022
Optical waveguide element and manufacturing method therefor
SUMITOMO OSAKA CEMENT CO LTD0 citations50
US12265310B2Apr 1, 2025
Optical waveguide device, optical modulator, optical modulation module, and optical transmission apparatus
SUMITOMO OSAKA CEMENT CO LTD0 citations49
US12332534B2Jun 17, 2025
Optical waveguide device, optical modulator, optical modulation module, and optical transmission apparatus
SUMITOMO OSAKA CEMENT CO LTD0 citations48
US12461306B2Nov 4, 2025
Optical waveguide element, optical modulation device using optical waveguide element, and optical transmission device using optical waveguide element
SUMITOMO OSAKA CEMENT CO LTD0 citations45