Inventor
IWATSUKA SHINJI
JP36 patents
⚠️ This page may combine multiple inventors who share the name “IWATSUKA SHINJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TDK CORP
35 patentsUS5245471ASep 14, 1993
Polarizers, polarizer-equipped optical elements, and method of manufacturing the same
TDK CORP128 citations97
US5691845ANov 25, 1997
Optical isolator, optical isolator with fiber and method for making the same
TDK CORP63 citations94
US9939709B2Apr 10, 2018
Optical waveguide element and optical modulator using the same
TDK CORP16 citations92
US6621630B2Sep 16, 2003
Composite optical element, optical isolator, optical attenuator and processes for producing them
TDK CORP20 citations92
US6359733B1Mar 19, 2002
Composite optical element, optical isolator, optical circulator, optical switch and processes for producing them
TDK CORP22 citations92
US5640516AJun 17, 1997
Faraday rotator
TDK CORP26 citations92
US5499307AMar 12, 1996
Optical isolator and polarization splitter therefor
TDK CORP36 citations92
US5477376ADec 19, 1995
Optical attenuators and optical modulators employing magneto-optic element
TDK CORP25 citations92
US5359689AOct 25, 1994
Optical fiber terminal fitted with optical isolator and method of assembling the same
TDK CORP26 citations92
US11086149B2Aug 10, 2021
Electro-optic device
TDK CORP10 citations85
US10203583B2Feb 12, 2019
Optical waveguide element and optical modulator using the same
TDK CORP5 citations84
US7072111B2Jul 4, 2006
Reflection-type optical device
TDK CORP11 citations84
US5841922ANov 24, 1998
Optical fiber terminal with optical isolator and semiconductor laser module using the same
TDK CORP19 citations83
US9244296B2Jan 26, 2016
Optical modulator
TDK CORP13 citations82
US5500915AMar 19, 1996
Optical fiber terminal pitted with optical isolator
TDK CORP11 citations74
US11366344B2Jun 21, 2022
Optical modulator
TDK CORP5 citations73
US11226531B2Jan 18, 2022
Optical modulator
TDK CORP2 citations73
US11003044B2May 11, 2021
Electro-optic device
TDK CORP5 citations73
US10989980B2Apr 27, 2021
Optical modulator
TDK CORP5 citations73
US10955722B2Mar 23, 2021
Optical modulator
TDK CORP3 citations73
US10359684B2Jul 23, 2019
Optical waveguide element and optical modulator using the same
TDK CORP2 citations73
US6130778AOct 10, 2000
Composite optical element, optical isolator, optical circulator, optical switch and process for producing them
TDK CORP14 citations73
US5619367AApr 8, 1997
Apparatus and method for measuring magnetic fields employing magneto-optic element
TDK CORP8 citations73
US6309557B1Oct 30, 2001
Magnetic garnet material and faraday rotator using the same
TDK CORP9 citations71
US7002732B2Feb 21, 2006
Magneto-optical devices
TDK CORP2 citations63
US6833941B2Dec 21, 2004
Magneto-optic optical device
TDK CORP5 citations63
US12339562B2Jun 24, 2025
Optical modulator
TDK CORP0 citations62
US12164185B2Dec 10, 2024
Optical modulation element
TDK CORP0 citations62
US10585328B2Mar 10, 2020
Optical waveguide element and optical modulator using the same
TDK CORP1 citations62
US12174510B2Dec 24, 2024
Optical modulation element
TDK CORP0 citations52
US10649246B2May 12, 2020
Dielectric thin film-applied substrate and optical modulation element using the same
TDK CORP0 citations52
US10591801B2Mar 17, 2020
Optical modulator
TDK CORP0 citations52
US7444040B2Oct 28, 2008
Magneto-optical component
TDK CORP1 citations52
US6747782B2Jun 8, 2004
Faraday rotator and optical attenuator
TDK CORP0 citations52
US12085791B2Sep 10, 2024
Optical waveguide element and optical modulation element
TDK CORP0 citations51