Takekawa; Shunji

Patent Applications and Registrations

Patent applications and USPTO patent grants for Takekawa; Shunji.The latest application filed is for "method of fixing polarization-reversed region formed in ferroelectric single crystal and optical element using the same".

Company Profile

0.11.12

Takekawa; Shunji - Tsukuba JP
Takekawa; Shunji - Tokyo JP
Takekawa; Shunji - Ibaraki JP
TAKEKAWA; Shunji - Tsukuba-shi JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Method of fixing polarization-reversed region formed in ferroelectric single crystal Grant 8,223,427 - Liu , et al. July 17, 2	2012-07-17
Lens material, optical electronic component and optical electronic device Grant 7,999,983 - Kumatoriya , et al. August 16, 2	2011-08-16
Optical device and method of manufacturing the same Grant 7,985,294 - Yamamoto , et al. July 26, 2	2011-07-26
Method of Fixing Polarization-Reversed Region Formed in Ferroelectric Single Crystal and Optical Element Using the Same App 20090231703 - Liu; Xiaoyan ; et al.	2009-09-17
Lens Material, Optical Electronic Component And Optical Electronic Device App 20090108232 - KUMATORIYA; Makoto ; et al.	2009-04-30
Method of inverting polarization by controlling defect density or degree of order of lattice points Grant 7,446,930 - Kitamura , et al. November 4, 2	2008-11-04
Wavelength conversion element having multi-gratings and light generating apparatus using said element, and wavelength conversion element having cylindrical ferroelectric single crystals and light generating apparatus using said element Grant 7,403,327 - Kitamura , et al. July 22, 2	2008-07-22
Wavelength conversion element having multi-gratings and light generating apparatus using said element, and wavelength conversion element having cylindrical ferroelectric single crystals and light generating apparatus using said element App 20070127107 - Kitamura; Kenji ; et al.	2007-06-07
Method of inverting polarization by controlling defect density or degree of order of lattice points, and optical wavelength conversion element App 20070053054 - Kitamura; Kenji ; et al.	2007-03-08
Optical device and method of manufacturing the same App 20070014014 - Yamamoto; Futoshi ; et al.	2007-01-18
Holographic recording medium and holographic recording/reproducing apparatus using the same Grant 6,856,433 - Hatano , et al. February 15, 2	2005-02-15
Ferroelectric material, two-color holographic recording medium, and wavelength selection filter App 20040234867 - Hatano, Hideki ; et al.	2004-11-25
Method for treating photorefractive effect of an optical device and photorefractive effect-suppressed optical frequency conversion device Grant 6,814,800 - Kitamura , et al. November 9, 2	2004-11-09
Method for treating photorefractive effect of an optical device and photorefractive effect-suppressed optical frequency conversion device App 20040173138 - Kitamura, Kenji ; et al.	2004-09-09
Holographic recording medium and holographic recording/reproducing apparatus using the same App 20040120020 - Hatano, Hideki ; et al.	2004-06-24
Optically functional device, single crystal substrate for the device and method for its use Grant 6,747,787 - Furukawa , et al. June 8, 2	2004-06-08
Single crystal of lithium niobate or tantalate and its optical element, and process and apparatus for producing an oxide single crystal Grant 6,673,330 - Kitamura , et al. January 6, 2	2004-01-06
Photorefractive material Grant 6,670,079 - Kitamura , et al. December 30, 2	2003-12-30
Optically functional device, single crystal substrate for the device and method for its use Grant 6,624,923 - Furukawa , et al. September 23, 2	2003-09-23
Pretreatment method for hologram recording medium App 20030064294 - Kitamura, Kenji ; et al.	2003-04-03
Optically functional device, single crystal substrate for the device and method for its use App 20020033993 - Furukawa, Yasunori ; et al.	2002-03-21
Optically functional device, single crystal substrate for the device and method for its use App 20020024716 - Furukawa, Yasunori ; et al.	2002-02-28
Single crystal of lithium niobate or tantalate and its optical element, and process and apparatus for producing an oxide single crystal App 20010001944 - Kitamura, Kenji ; et al.	2001-05-31

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