Inventor
HASHIZUME YASUAKI
JP10 patents
⚠️ This page may combine multiple inventors who share the name “HASHIZUME YASUAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON TELEGRAPH & TELEPHONE
6 patentsUS6757454B2Jun 29, 2004
Polarization desensitized optical waveguide interferometer
NIPPON TELEGRAPH & TELEPHONE19 citations92
US8346030B2Jan 1, 2013
Polarization-independent waveguide-type optical interference circuit
NIPPON TELEGRAPH & TELEPHONE5 citations69
US7389033B2Jun 17, 2008
Planar lightwave circuit type variable optical attenuator
NIPPON TELEGRAPH & TELEPHONE5 citations62
US11971590B2Apr 30, 2024
Optical coupling method
NIPPON TELEGRAPH & TELEPHONE0 citations61
US12169347B2Dec 17, 2024
Semiconductor Mach-Zehnder optical modulator and IQ modulator
NIPPON TELEGRAPH & TELEPHONE0 citations50
US11994783B2May 28, 2024
IQ optical modulator
NIPPON TELEGRAPH & TELEPHONE0 citations49