Yoshitada NAMIKAWA

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Backlight unit and liquid crystal display device
- Patent number 11,131,799
- Issue date Sep 28, 2021
- Keiwa Inc.
- Yoshitada Namikawa
- G02 - OPTICS
Information Patent Grant
Optical sheet for backlight unit and backlight unit
- Patent number 10,754,083
- Issue date Aug 25, 2020
- Keiwa Inc.
- Kenichi Harada
- B32 - LAYERED PRODUCTS
Information Patent Grant
Backlight unit and liquid crystal display device
- Patent number 10,718,892
- Issue date Jul 21, 2020
- Keiwa Inc.
- Yoshitada Namikawa
- G02 - OPTICS
Information Patent Grant
Prism sheet for backlight unit and backlight unit for liquid crysta...
- Patent number 10,466,405
- Issue date Nov 5, 2019
- Keiwa Inc.
- Kenichi Harada
- G02 - OPTICS
Information Patent Grant
Optical sheet for liquid crystal display device, and backlight unit...
- Patent number 10,459,151
- Issue date Oct 29, 2019
- Keiwa Inc.
- Kenichi Harada
- G02 - OPTICS
Information Patent Grant
Optical sheet for liquid crystal display device, backlight unit for...
- Patent number 10,386,567
- Issue date Aug 20, 2019
- Keiwa Inc.
- Kenichi Harada
- G02 - OPTICS
Information Patent Grant
Optical sheet and edge-lit backlight unit
- Patent number 9,823,390
- Issue date Nov 21, 2017
- Keiwa Inc.
- Yoshitada Namikawa
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE
- Publication number 20210003767
- Publication date Jan 7, 2021
- KEIWA INC.
- Yoshitada NAMIKAWA
- G02 - OPTICS
Information Patent Application
BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE
- Publication number 20200124784
- Publication date Apr 23, 2020
- KEIWA INC.
- Yoshitada NAMIKAWA
- G02 - OPTICS
Information Patent Application
OPTICAL SHEET FOR BACKLIGHT UNIT AND BACKLIGHT UNIT
- Publication number 20180364411
- Publication date Dec 20, 2018
- KEIWA INC.
- Kenichi HARADA
- B32 - LAYERED PRODUCTS
Information Patent Application
OPTICAL SHEET FOR LIQUID CRYSTAL DISPLAY DEVICE, AND BACKLIGHT UNIT...
- Publication number 20180180794
- Publication date Jun 28, 2018
- KEIWA INC.
- Kenichi HARADA
- G02 - OPTICS
Information Patent Application
PRISM SHEET FOR BACKLIGHT UNIT AND BACKLIGHT UNIT FOR LIQUID CRYSTA...
- Publication number 20170357047
- Publication date Dec 14, 2017
- KEIWA INC.
- Kenichi HARADA
- G02 - OPTICS
Information Patent Application
OPTICAL SHEET FOR LIQUID CRYSTAL DISPLAY DEVICE, BACKLIGHT UNIT FOR...
- Publication number 20170329066
- Publication date Nov 16, 2017
- KEIWA INC.
- Kenichi HARADA
- G02 - OPTICS
Information Patent Application
OPTICAL SHEET AND EDGE-LIT BACKLIGHT UNIT
- Publication number 20160011339
- Publication date Jan 14, 2016
- KEIWA INC.
- Yoshitada NAMIKAWA
- G02 - OPTICS