Tadayoshi FUKUDA

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Tokyo, JP

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Patents Grantslast 30 patents

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
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

Patents Applicationslast 30 patents

Information Patent Application
LIGHT DIFFUSION SHEET, BACKLIGHT UNIT, LIQUID CRYSTAL DISPLAY DEVIC...
- Publication number 20240094446
- Publication date Mar 21, 2024
- KEIWA INC.
- Tadayoshi FUKUDA
- 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