Inventor
MATSUBARA NORITAKA
JP11 patents
⚠️ This page may combine multiple inventors who share the name “MATSUBARA NORITAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FURUKAWA ELECTRIC CO LTD
10 patentsUS7492983B2Feb 17, 2009
Optical circuit device
FURUKAWA ELECTRIC CO LTD12 citations83
US7146079B2Dec 5, 2006
Dynamic gain equalizer
FURUKAWA ELECTRIC CO LTD7 citations73
US12282188B2Apr 22, 2025
Ring-resonator filter device
FURUKAWA ELECTRIC CO LTD0 citations61
US11835759B2Dec 5, 2023
Optical waveguide circuit
FURUKAWA ELECTRIC CO LTD0 citations61
US9488783B2Nov 8, 2016
Switch apparatus
FURUKAWA ELECTRIC CO LTD1 citations51
US8718423B2May 6, 2014
Optical branching element and optical branching circuit
FURUKAWA ELECTRIC CO LTD0 citations51
US8380023B2Feb 19, 2013
Waveguide-type optical circuit
FURUKAWA ELECTRIC CO LTD1 citations51
US12519283B2Jan 6, 2026
Semiconductor optical device and method of manufacturing semiconductor optical device
FURUKAWA ELECTRIC CO LTD0 citations50
US12337313B2Jun 24, 2025
Storage container
FURUKAWA ELECTRIC CO LTD0 citations50
US10386576B2Aug 20, 2019
Optical waveguide circuit having identical polarization-cancelling S-shaped curves
FURUKAWA ELECTRIC CO LTD0 citations41