Inventor · disambiguated record
Yasuaki Hashizume
Also filed as: HASHIZUME YASUAKI
8 granted patents·1 pending application·64 citations·filing 2001–2021
83Inventor score
Top patents by PatentIndex Score
9 records- 0187US8150219B2Waveguide-type optical interferometerNASU YUSUKE·Filed 2007·Granted Apr 3, 2012·24 cites·13 claims
- 0277US6757454B2Polarization desensitized optical waveguide interferometerNIPPON TELEGRAPH & TELEPHONE·Filed 2001·Granted Jun 29, 2004·19 cites·16 claims
- 0376US8625943B2Waveguide device and moduleSOMA SHUNICHI·Filed 2009·Granted Jan 7, 2014·11 cites·17 claims
- 0476US7389033B2Planar lightwave circuit type variable optical attenuatorNIPPON TELEGRAPH & TELEPHONE·Filed 2006·Granted Jun 17, 2008·5 cites·13 claims
- 0567US8346030B2Polarization-independent waveguide-type optical interference circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2007·Granted Jan 1, 2013·5 cites·16 claims
- 0655US11971590B2Optical coupling methodNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Apr 30, 2024·0 cites·8 claims
- 0753US11994783B2IQ optical modulatorNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted May 28, 2024·0 cites·7 claims
- 0843US2024128716A1Semiconductor Optical Integrated DeviceNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 0939US12169347B2Semiconductor Mach-Zehnder optical modulator and IQ modulatorNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Dec 17, 2024·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →