Inventor
KITAMURA TAKAMITSU
JP24 patents
⚠️ This page may combine multiple inventors who share the name “KITAMURA TAKAMITSU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO ELECTRIC INDUSTRIES
19 patentsUS9523871B2Dec 20, 2016
Semiconductor optical modulator and method for manufacturing semiconductor optical modulator
SUMITOMO ELECTRIC INDUSTRIES10 citations84
US9261649B2Feb 16, 2016
Method for manufacturing semiconductor optical waveguide device, and semiconductor optical waveguide device
SUMITOMO ELECTRIC INDUSTRIES7 citations84
US10248000B2Apr 2, 2019
Semiconductor optical element and method for manufacturing the same
SUMITOMO ELECTRIC INDUSTRIES3 citations73
US9753350B2Sep 5, 2017
Mach-Zehnder modulator, method of making optical waveguide structure
SUMITOMO ELECTRIC INDUSTRIES2 citations73
US9638980B2May 2, 2017
Modulator and production method thereof
SUMITOMO ELECTRIC INDUSTRIES4 citations73
US9280004B2Mar 8, 2016
Method for manufacturing semiconductor modulator and semiconductor modulator
SUMITOMO ELECTRIC INDUSTRIES5 citations73
US9229168B2Jan 5, 2016
Semiconductor optical waveguide device and method for manufacturing the same
SUMITOMO ELECTRIC INDUSTRIES3 citations73
US9229293B2Jan 5, 2016
Semiconductor optical device and method for manufacturing semiconductor optical device
SUMITOMO ELECTRIC INDUSTRIES4 citations73
US8986560B2Mar 24, 2015
Method for producing optical semiconductor device
SUMITOMO ELECTRIC INDUSTRIES4 citations73
US9563100B2Feb 7, 2017
Optical semiconductor device and method of producing the same
SUMITOMO ELECTRIC INDUSTRIES2 citations72
US9280030B2Mar 8, 2016
Method for producing semiconductor optical device and semiconductor optical device
SUMITOMO ELECTRIC INDUSTRIES2 citations63
US9329451B2May 3, 2016
Method for producing optical semiconductor device
SUMITOMO ELECTRIC INDUSTRIES2 citations62
US9158139B2Oct 13, 2015
Method for manufacturing mach-zehnder modulator, method for manufacturing optical waveguide, and optical waveguide
SUMITOMO ELECTRIC INDUSTRIES2 citations62
US8986553B2Mar 24, 2015
Method for manufacturing optical semiconductor device
SUMITOMO ELECTRIC INDUSTRIES1 citations52
US10901290B2Jan 26, 2021
Method for fabricating Mach-Zehnder modulator, Mach-Zehnder modulator
SUMITOMO ELECTRIC INDUSTRIES0 citations51
US10475669B2Nov 12, 2019
Method for fabricating Mach-Zehnder modulator, Mach-Zehnder modulator
SUMITOMO ELECTRIC INDUSTRIES0 citations51
US9176360B2Nov 3, 2015
Method for producing spot-size convertor
SUMITOMO ELECTRIC INDUSTRIES1 citations51
US10823610B2Nov 3, 2020
Light receiving device, method for fabricating light receiving device
SUMITOMO ELECTRIC INDUSTRIES0 citations41
US10185204B2Jan 22, 2019
Mach-Zehnder modulator, method for fabricating Mach-Zehnder modulator
SUMITOMO ELECTRIC INDUSTRIES0 citations41